569 lines
19 KiB
Markdown
569 lines
19 KiB
Markdown
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Greenlock™ for node.js
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=====
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Greenlock provides Free SSL, Free Wildcard SSL, and Fully Automated HTTPS <br>
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<small>certificates issued by Let's Encrypt v2 via [ACME](https://git.coolaj86.com/coolaj86/acme-v2.js)</small>
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| Sponsored by [ppl](https://ppl.family) |
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Greenlock works
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in the [Commandline](https://git.coolaj86.com/coolaj86/greenlock-cli.js) (cli),
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as a [Web Server](https://git.coolaj86.com/coolaj86/greenlock-server.js),
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in [Web Browsers](https://git.coolaj86.com/coolaj86/greenlock.html) (WebCrypto),
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and with **node.js** ([npm](https://www.npmjs.com/package/greenlock)).
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Features
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========
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- [x] Actively Maintained and Supported
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- [x] Automatic HTTPS
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- [x] Free SSL
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- [x] Free Wildcard SSL
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- [x] Multiple domain support (up to 100 altnames per SAN)
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- [x] Dynamic Virtual Hosting (vhost)
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- [x] Automatical renewal (30 to 21 days before expiration)
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- [x] Great ACME support via [acme.js](https://git.coolaj86.com/coolaj86/acme-v2.js)
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- [x] "dry run" with self-diagnostics
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- [x] ACME draft 12
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- [x] Let's Encrypt v2
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- [x] Let's Encrypt v1
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- [x] [Commandline](https://git.coolaj86.com/coolaj86/greenlock-cli.js) (cli) Utilities
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- [x] Works with `bash`, `fish`, `zsh`, `cmd.exe`, `PowerShell`, and more
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- [x] [Browser](https://git.coolaj86.com/coolaj86/greenlock.html) Support
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- [x] Full node.js support, with modules for
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- [x] [http/https](https://git.coolaj86.com/coolaj86/greenlock-express.js/src/branch/master/examples/https-server.js), [Express.js](https://git.coolaj86.com/coolaj86/greenlock-express.js), [cluster](https://git.coolaj86.com/coolaj86/greenlock-cluster.js), [hapi](https://git.coolaj86.com/coolaj86/greenlock-hapi.js), [Koa](https://git.coolaj86.com/coolaj86/greenlock-koa.js), [rill](https://git.coolaj86.com/coolaj86/greenlock-rill.js), [restify](https://git.coolaj86.com/coolaj86/greenlock-restify.js), spdy, etc
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- [x] Great for securing your Raspberry Pi
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- [x] Extensible Plugin Support
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- [x] AWS S3, AWS Route53, Azure, CloudFlare, Consul, Digital Ocean, etcd, Redis
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Greenlock.js for Middleware
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------
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Documentation for using Greenlock with
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[http/https](https://git.coolaj86.com/coolaj86/greenlock-express.js/src/branch/master/examples/https-server.js),
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[Express.js](https://git.coolaj86.com/coolaj86/greenlock-express.js),
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[cluster](https://git.coolaj86.com/coolaj86/greenlock-cluster.js),
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[hapi](https://git.coolaj86.com/coolaj86/greenlock-hapi.js),
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[Koa](https://git.coolaj86.com/coolaj86/greenlock-koa.js),
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[rill](https://git.coolaj86.com/coolaj86/greenlock-rill.js).
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[restify](https://git.coolaj86.com/coolaj86/greenlock-restify.js).
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Table of Contents
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=================
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* Install
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* **QuickStart**
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* Simple Examples
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* Example with ALL OPTIONS
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* API
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* Developer API
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* Change History
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* License
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Install
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=======
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```bash
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npm install --save greenlock@2.x
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```
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**Optional** dependency for *more efficient* RSA key generation:
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<small>(important for those on ARM devices like Raspberry Pi)</small>
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```bash
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npm install --save ursa
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```
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**Optional** dependency for *Let's Encrypt v01* (pre-draft ACME spec) compatibility:
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<small>(important for those on ARM devices like Raspberry Pi)</small>
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```bash
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npm install --save le-acme-core
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```
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### Production vs Staging
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If at first you don't succeed, stop and switch to staging.
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I've implemented a "dry run" loopback test with self diagnostics
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so it's pretty safe to start off with the production URLs
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and be far less likely to hit the bad request rate limits.
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However, if your first attempt to get a certificate fails
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I'd recommend switching to the staging acme server to debug -
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unless you're very clear on what the failure was and how to fix it.
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```
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{ server: 'https://acme-staging-v02.api.letsencrypt.org/directory' }
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```
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### QuickStart Screencast
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Watch the QuickStart demonstration: [https://youtu.be/e8vaR4CEZ5s](https://youtu.be/e8vaR4CEZ5s&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk)
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<a href="https://www.youtube.com/watch?v=e8vaR4CEZ5s&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk"><img src="https://i.imgur.com/Y8ix6Ts.png" title="QuickStart Video" alt="YouTube Video Preview" /></a>
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* [0:00](https://www.youtube.com/watch?v=e8vaR4CEZ5s&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk#t=0) - Intro
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* [2:22](https://www.youtube.com/watch?v=e8vaR4CEZ5s&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk#t=142) - Demonstrating QuickStart Example
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* [6:37](https://www.youtube.com/watch?v=e8vaR4CEZ5s&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk?t=397) - Troubleshooting / Gotchas
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#### Production Configuration (Part 2)
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* [1:00](https://www.youtube.com/watch?v=bTEn93gxY50&index=2&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk&t=60) - Bringing Greenlock into an Existing Express Project
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* [2:26](https://www.youtube.com/watch?v=bTEn93gxY50&index=2&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk&t=146) - The `approveDomains` callback
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#### Security Concerns (Part 3)
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* [0:00](https://www.youtube.com/watch?v=aZgVqPzoZTY&index=3&list=PLZaEVINf2Bq_lrS-OOzTUJB4q3HxarlXk) - Potential Attacks, and Mitigation
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Easy as 1, 2, 3... 4
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=====
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Greenlock is built to incredibly easy to use, without sacrificing customization or extensibility.
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The following examples range from just a few lines of code for getting started,
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to more robust examples that you might start with for an enterprise-grade use of the ACME api.
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* Automatic HTTPS (for single sites)
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* Fully Automatic HTTPS (for multi-domain vhosts)
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* Manual HTTPS (for API integration)
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Automatic HTTPS
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---------------
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**Note**: For (fully) automatic HTTPS you may prefer
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the [Express.js module](https://git.coolaj86.com/coolaj86/greenlock-express.js)
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This works for most people, but it's not as fun as some of the other examples.
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Great when
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- [x] You only need a limited number of certificates
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- [x] You want to use the bare node http and https modules without fluff
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```js
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////////////////////
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// INIT GREENLOCK //
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////////////////////
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var greenlock = require('greenlock').create({
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version: 'draft-12'
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, server: 'https://acme-v02.api.letsencrypt.org/directory'
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, configDir: '~/.config/acme'
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, email: 'user@example.com' // IMPORTANT: Change email and domains
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, agreeTos: true // Accept Let's Encrypt v2 Agreement
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, communityMember: true // Get (rare) non-mandatory updates about cool greenlock-related stuff (default false)
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, securityUpdates: true // Important and mandatory notices related to security or breaking API changes (default true)
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, telemetry: true // Contribute project telemetry (default true)
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, approveDomains: approveDomains
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});
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```
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```js
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/////////////////////
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// APPROVE DOMAINS //
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/////////////////////
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function approveDomains(opts, certs, cb) {
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// check for domains you want to receive certificates for
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if ('example.com' === opts.domain) {
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cb(null, { options: opts, certs: certs });
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return;
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}
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// return error otherwise
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cb(new Error("bad domain"));
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}
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```
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```js
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////////////////////
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// CREATE SERVERS //
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////////////////////
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var redir = require('redirect-https')();
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require('http').createServer(greenlock.middleware(redir)).listen(80);
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require('spdy').createServer(greenlock.tlsOptions, function (req, res) {
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res.end('Hello, Secure World!');
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}).listen(443);
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```
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Fully Automatic HTTPS
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------------
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**Note**: For (fully) automatic HTTPS you may prefer
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the [Express.js module](https://git.coolaj86.com/coolaj86/greenlock-express.js)
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Great when
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- [x] You have a growing number of domains
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- [x] You're integrating into your own hosting solution
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- [x] Customize ACME http-01 or dns-01 challenge
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```js
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////////////////////
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// INIT GREENLOCK //
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////////////////////
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var path = require('path');
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var os = require('os')
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var Greenlock = require('greenlock');
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var greenlock = Greenlock.create({
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version: 'draft-12'
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, server: 'https://acme-v02.api.letsencrypt.org/directory'
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// approve a growing list of domains
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, approveDomains: approveDomains
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// If you wish to replace the default account and domain key storage plugin
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, store: require('le-store-certbot').create({
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configDir: path.join(os.homedir(), 'acme/etc')
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, webrootPath: '/tmp/acme-challenges'
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})
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});
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/////////////////////
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// APPROVE DOMAINS //
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/////////////////////
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var http01 = require('le-challenge-fs').create({ webrootPath: '/tmp/acme-challenges' });
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function approveDomains(opts, certs, cb) {
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// This is where you check your database and associated
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// email addresses with domains and agreements and such
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// Opt-in to submit stats and get important updates
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opts.communityMember = true;
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// If you wish to replace the default challenge plugin, you may do so here
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opts.challenges = { 'http-01': http01 };
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// The domains being approved for the first time are listed in opts.domains
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// Certs being renewed are listed in certs.altnames
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if (certs) {
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opts.domains = certs.altnames;
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}
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else {
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opts.email = 'john.doe@example.com';
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opts.agreeTos = true;
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}
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// NOTE: you can also change other options such as `challengeType` and `challenge`
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// opts.challengeType = 'http-01';
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// opts.challenge = require('le-challenge-fs').create({});
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cb(null, { options: opts, certs: certs });
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}
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////////////////////
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// CREATE SERVERS //
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////////////////////
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var redir = require('redirect-https')();
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require('http').createServer(greenlock.middleware(redir)).listen(80);
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require('https').createServer(greenlock.tlsOptions, function (req, res) {
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res.end('Hello, Secure World!');
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}).listen(443);
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```
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Manual HTTPS
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-------------
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Here's a taste of the API that you might use if building a commandline tool or API integration
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that doesn't use node's SNICallback.
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```
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/////////////////////
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// SET USER PARAMS //
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/////////////////////
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var opts = {
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domains: [ 'example.com' // CHANGE EMAIL AND DOMAINS
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, 'www.example.com' ]
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, email: 'user@example.com'
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, agreeTos: true // Accept Let's Encrypt v2 Agreement
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, communityMember: true // Help make Greenlock better by submitting
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// stats and getting updates
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};
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////////////////////
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// INIT GREENLOCK //
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////////////////////
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var greenlock = require('greenlock').create({
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version: 'draft-12'
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, server: 'https://acme-v02.api.letsencrypt.org/directory'
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, configDir: '/tmp/acme/etc'
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});
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///////////////////
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// GET TLS CERTS //
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///////////////////
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greenlock.register(opts).then(function (certs) {
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console.log(certs);
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// privkey, cert, chain, expiresAt, issuedAt, subject, altnames
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}, function (err) {
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console.error(err);
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});
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```
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The domain key and ssl certificates you get back can be used in a webserver like this:
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```js
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var tlsOptions = { key: certs.privkey, cert: certs.cert + '\r\n' + certs.chain };
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require('https').createServer(tlsOptions, function (req, res) {
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res.end('Hello, Secure World!');
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}).listen(443);
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```
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Example with ALL OPTIONS
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=========
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The configuration consists of 3 components:
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* Storage Backend (search npm for projects starting with 'le-store-')
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* ACME Challenge Handlers (search npm for projects starting with 'le-challenge-')
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* Letsencryt Config (this is all you)
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```javascript
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'use strict';
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var Greenlock = require('greenlock');
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var greenlock;
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// Storage Backend
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var leStore = require('le-store-certbot').create({
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configDir: '~/acme/etc' // or /etc/letsencrypt or wherever
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, debug: false
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});
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// ACME Challenge Handlers
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var leHttpChallenge = require('le-challenge-fs').create({
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webrootPath: '~/acme/var/' // or template string such as
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, debug: false // '/srv/www/:hostname/.well-known/acme-challenge'
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});
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function leAgree(opts, agreeCb) {
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// opts = { email, domains, tosUrl }
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agreeCb(null, opts.tosUrl);
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}
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greenlock = Greenlock.create({
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version: 'draft-12' // 'draft-12' or 'v01'
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// 'draft-12' is for Let's Encrypt v2 otherwise known as ACME draft 12
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// 'v02' is an alias for 'draft-12'
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// 'v01' is for the pre-spec Let's Encrypt v1
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//
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// staging API
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//server: 'https://acme-staging-v02.api.letsencrypt.org/directory'
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//
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// production API
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server: 'https://acme-v02.api.letsencrypt.org/directory'
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, store: leStore // handles saving of config, accounts, and certificates
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, challenges: {
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'http-01': leHttpChallenge // handles /.well-known/acme-challege keys and tokens
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}
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, challengeType: 'http-01' // default to this challenge type
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, agreeToTerms: leAgree // hook to allow user to view and accept LE TOS
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//, sni: require('le-sni-auto').create({}) // handles sni callback
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// renewals happen at a random time within this window
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, renewWithin: 30 * 24 * 60 * 60 * 1000 // certificate renewal may begin at this time
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, renewBy: 21 * 24 * 60 * 60 * 1000 // certificate renewal should happen by this time
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, debug: false
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//, log: function (debug) {console.log.apply(console, args);} // handles debug outputs
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});
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// If using express you should use the middleware
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// app.use('/', greenlock.middleware());
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//
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// Otherwise you should see the test file for usage of this:
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// greenlock.challenges['http-01'].get(opts.domain, key, val, done)
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// Check in-memory cache of certificates for the named domain
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greenlock.check({ domains: [ 'example.com' ] }).then(function (results) {
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if (results) {
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// we already have certificates
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return;
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}
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// Register Certificate manually
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greenlock.register({
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domains: ['example.com'] // CHANGE TO YOUR DOMAIN (list for SANS)
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, email: 'user@email.com' // CHANGE TO YOUR EMAIL
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, agreeTos: '' // set to tosUrl string (or true) to pre-approve (and skip agreeToTerms)
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, rsaKeySize: 2048 // 2048 or higher
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, challengeType: 'http-01' // http-01, tls-sni-01, or dns-01
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}).then(function (results) {
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console.log('success');
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}, function (err) {
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// Note: you must either use greenlock.middleware() with express,
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// manually use greenlock.challenges['http-01'].get(opts, domain, key, val, done)
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// or have a webserver running and responding
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// to /.well-known/acme-challenge at `webrootPath`
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console.error('[Error]: node-greenlock/examples/standalone');
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console.error(err.stack);
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});
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});
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```
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Here's what `results` looks like:
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```javascript
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{ privkey: '' // PEM encoded private key
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, cert: '' // PEM encoded cert
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, chain: '' // PEM encoded intermediate cert
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, issuedAt: 0 // notBefore date (in ms) parsed from cert
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, expiresAt: 0 // notAfter date (in ms) parsed from cert
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, subject: '' // example.com
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, altnames: [] // example.com,www.example.com
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}
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```
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API
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---
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The full end-user API is exposed in the example above and includes all relevant options.
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```
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greenlock.register(opts)
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greenlock.check(opts)
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```
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### Helper Functions
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We do expose a few helper functions:
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* Greenlock.validDomain(hostname) // returns '' or the hostname string if it's a valid ascii or punycode domain name
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TODO fetch domain tld list
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### Template Strings
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The following variables will be tempalted in any strings passed to the options object:
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* `~/` replaced with `os.homedir()` i.e. `/Users/aj`
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* `:hostname` replaced with the first domain in the list i.e. `example.com`
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### Dangerous Options
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By default SNI is made to lowercase and is automatically rejected if it contains invalid characters for a domain.
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This behavior can be modified:
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* `__dns_allow_dangerous_names` allow SNI names like "Robert'); DROP TABLE Students;"
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* `__dns_preserve_case` passes SNI names such as "ExAMpLE.coM" without converting to lower case
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Developer API
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|
-------------
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If you are developing an `le-store-*` or `le-challenge-*` plugin you need to be aware of
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additional internal API expectations.
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|
**IMPORTANT**:
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|
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Use `v2.0.0` as your initial version - NOT v0.1.0 and NOT v1.0.0 and NOT v3.0.0.
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This is to indicate that your module is compatible with v2.x of node-greenlock.
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|
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Since the public API for your module is defined by node-greenlock the major version
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should be kept in sync.
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|
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|
### store implementation
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|
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See <https://git.coolaj86.com/coolaj86/le-store-SPEC.js>
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|
|
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* getOptions()
|
|
* accounts.
|
|
* checkKeypair(opts, cb)
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|
* check(opts, cb)
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|
* setKeypair(opts, keypair, cb)
|
|
* set(opts, reg, cb)
|
|
* certificates.
|
|
* checkKeypair(opts, cb)
|
|
* check(opts, cb)
|
|
* setKeypair(opts, keypair, cb)
|
|
* set(opts, reg, cb)
|
|
|
|
### challenge implementation
|
|
|
|
See https://git.coolaj86.com/coolaj86/le-challenge-fs.js
|
|
|
|
* `.set(opts, domain, key, value, cb);` // opts will be saved with domain/key
|
|
* `.get(opts, domain, key, cb);` // opts will be retrieved by domain/key
|
|
* `.remove(opts, domain, key, cb);` // opts will be retrieved by domain/key
|
|
|
|
Change History
|
|
==============
|
|
* v2.4
|
|
* v2.4.3 - add security updates (default true) independent of community updates (default false)
|
|
* v2.2 - Let's Encrypt v2 Support
|
|
* v2.2.11 - documentation updates
|
|
* v2.2.10 - don't let SNICallback swallow approveDomains errors 6286883fc2a6ebfff711a540a2e4d92f3ac2907c
|
|
* v2.2.8 - communityMember option support
|
|
* v2.2.7 - bugfix for wildcard support
|
|
* v2.2.5 - node v6.x compat
|
|
* v2.2.4 - don't promisify all of `dns`
|
|
* v2.2.3 - `renewWithin` default to 30 days
|
|
* v2.2.2 - replace git dependency with npm
|
|
* v2.2.1 - April 2018 **Let's Encrypt v2** support
|
|
* v2.1.17 - Nov 5th 2017 migrate back to personal repo
|
|
* v2.1.9 - Jan 18th 2017 renamed to greenlock
|
|
* v2.0.2 - Aug 9th 2016 update readme
|
|
* v2.0.1 - Aug 9th 2016
|
|
* major refactor
|
|
* simplified API
|
|
* modular plugins
|
|
* knock out bugs
|
|
* v1.5.0 now using letiny-core v2.0.0 and rsa-compat
|
|
* v1.4.x I can't remember... but it's better!
|
|
* v1.1.0 Added letiny-core, removed node-letsencrypt-python
|
|
* v1.0.2 Works with node-letsencrypt-python
|
|
* v1.0.0 Thar be dragons
|
|
|
|
LICENSE
|
|
=======
|
|
|
|
Dual-licensed MIT and Apache-2.0
|
|
|
|
See LICENSE
|
|
|
|
Greenlock™ is a trademark of AJ ONeal
|