563 lines
20 KiB
Markdown
563 lines
20 KiB
Markdown
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# [Greenlock](https://git.rootprojects.org/root/greenlock.js)™ for node.js | a [Root](https://rootprojects.org) project
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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.rootprojects.org/root/acme-v2.js)</small>
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Greenlock works
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in the [Commandline](https://git.rootprojects.org/root/greenlock-cli.js) (cli),
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as a [Web Server](https://git.rootprojects.org/root/greenlock-express.js),
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in [Web Browsers](https://greenlock.domains) (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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- [x] Actively Maintained and Commercially Supported
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- [x] VanillaJS
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- [x] Limited Dependencies
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- [x] MPL-2.0 licensed (great for hobbyists and DIYers)
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- [x] [Contact us](mailto:support@rootprojects.org?subject=Greenlock%20Commercial%20Support) for Business Support Plans and Commercial LTS Licensing (great for IoT, On-Prem, Web Hosting, etc)
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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 (10 to 14 days before expiration)
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- [x] Great ACME support via [acme.js](https://git.rootprojects.org/root/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~ (deprecated)
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- [x] [Commandline](https://git.rootprojects.org/root/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.rootprojects.org/root/greenlock.html) Support
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- [x] Full node.js support, with modules for
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- [x] [http/https](https://git.rootprojects.org/root/greenlock-express.js/src/branch/master/examples), [Express.js](https://git.rootprojects.org/root/greenlock-express.js), [hapi](https://git.rootprojects.org/root/greenlock-hapi.js), [Koa](https://git.rootprojects.org/root/greenlock-koa.js), [rill](https://git.rootprojects.org/root/greenlock-rill.js), spdy, etc
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- [x] Great for securing your Raspberry Pi and IoT projects
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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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Documentation for using Greenlock with
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[http/https](https://git.rootprojects.org/root/greenlock-express.js/src/branch/master/examples),
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[Express.js](https://git.rootprojects.org/root/greenlock-express.js),
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[hapi](https://git.rootprojects.org/root/greenlock-hapi.js),
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[Koa](https://git.rootprojects.org/root/greenlock-koa.js),
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[rill](https://git.rootprojects.org/root/greenlock-rill.js).
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# Table of Contents
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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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```bash
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npm install --save greenlock@2.x
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```
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**Optional** for _more efficient_ RSA key generation you must use node v10.12+
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<small>(important for those on ARM devices like Raspberry Pi)</small>
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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)
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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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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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**Note**: For (fully) automatic HTTPS you may prefer
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the [Express.js module](https://git.rootprojects.org/root/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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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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configDir: '~/.config/acme', // A writable folder (a non-fs plugin)
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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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});
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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')
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.createServer(greenlock.middleware(redir))
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.listen(80);
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require('spdy')
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.createServer(greenlock.tlsOptions, function(req, res) {
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res.end('Hello, Secure World!');
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})
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.listen(443);
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```
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## Fully Automatic HTTPS
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**Note**: For (fully) automatic HTTPS you may prefer
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the [Express.js module](https://git.rootprojects.org/root/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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// Use the approveDomains callback to set per-domain config
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// (default: approve any domain that passes self-test of built-in challenges)
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approveDomains: approveDomains,
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// the default servername to use when the client doesn't specify
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servername: 'example.com',
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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-fs').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({
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webrootPath: '/tmp/acme-challenges'
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});
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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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// certs.domains;
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// certs.altnames;
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opts.email = 'john.doe@example.com';
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opts.agreeTos = true;
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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')
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.createServer(greenlock.middleware(redir))
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.listen(80);
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require('https')
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.createServer(greenlock.tlsOptions, function(req, res) {
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res.end('Hello, Secure World!');
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})
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.listen(443);
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```
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## Manual HTTPS
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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 = {
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key: certs.privkey,
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cert: certs.cert + '\r\n' + certs.chain
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};
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require('https')
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.createServer(tlsOptions, function(req, res) {
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res.end('Hello, Secure World!');
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})
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.listen(443);
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```
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# Example with ALL OPTIONS
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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('greenlock-store-fs').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: 14 * 24 * 60 * 60 * 1000 // certificate renewal may begin at this time
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, renewBy: 10 * 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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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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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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Use `v3.0.0` as your initial version - NOT v0.1.0 and NOT v1.0.0 and NOT v2.0.0.
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This is to indicate that your module is compatible with v3 (v2.7+) of node-greenlock.
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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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### store implementation
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See [greenlock-store-test](https://git.rootprojects.org/root/greenlock-store-test.js)
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and [greenlock-store-fs](https://git.rootprojects.org/root/greenlock-store-fs.js)
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- accounts.
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- checkKeypair(opts)
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- check(opts)
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- setKeypair(opts)
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- set(opts)
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- certificates.
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- checkKeypair(opts)
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- check(opts)
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- setKeypair(opts)
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- set(opts)
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### challenge implementation
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See [greenlock-challenge-test](https://git.rootprojects.org/root/greenlock-challenge-test.js),
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[acme-http-01-cli](https://git.rootprojects.org/root/acme-http-01-cli.js),
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and [acme-dns-01-cli](https://git.rootprojects.org/root/acme-dns-01-cli.js)
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- `.set(opts);`
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- `.get(opts);`
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- `.remove(opts);`
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# Change History
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- v2.7
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- API: transitional for v3 API (Promies, async/await)
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- Security: Zero external dependencies
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- Plugins: `greenlock-store-fs` replaces `le-store-certbot` as the default storage plugin
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- Features: Full wildcard support
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- Licensing: Commercial licensing and support plans now available
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- v2.6
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- better defaults, fewer explicit options
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- better pre-flight self-tests, explicit domains not required
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- v2.5
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- bugfix JWK (update rsa-compat)
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- eliminate all external non-optional dependencies
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- v2.4
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- v2.4.3 - add security updates (default true) independent of community updates (default false)
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- v2.2 - Let's Encrypt v2 Support
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- v2.2.11 - documentation updates
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- v2.2.10 - don't let SNICallback swallow approveDomains errors 6286883fc2a6ebfff711a540a2e4d92f3ac2907c
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- v2.2.8 - communityMember option support
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- v2.2.7 - bugfix for wildcard support
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- v2.2.5 - node v6.x compat
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- v2.2.4 - don't promisify all of `dns`
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- v2.2.3 - `renewWithin` default to 14 days
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- v2.2.2 - replace git dependency with npm
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- v2.2.1 - April 2018 **Let's Encrypt v2** support
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- v2.1.17 - Nov 5th 2017 migrate back to personal repo
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- v2.1.9 - Jan 18th 2017 renamed to greenlock
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- v2.0.2 - Aug 9th 2016 update readme
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- v2.0.1 - Aug 9th 2016
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- major refactor
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- simplified API
|
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- modular plugins
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- knock out bugs
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- v1.5.0 now using letiny-core v2.0.0 and rsa-compat
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- v1.4.x I can't remember... but it's better!
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- v1.1.0 Added letiny-core, removed node-letsencrypt-python
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- v1.0.2 Works with node-letsencrypt-python
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- v1.0.0 Thar be dragons
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# Commercial Licensing
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As the number of businesses using Greenlock commercially has increased, we've become more aware of the need for quick-turnaround support and licenses that allow for local private modifications. Currently we offer LTS support and commercial licensing models for IoT, On-Prem, and Web Hosting. Please [contact us](mailto:support@rootprojects.org?subject=Greenlock%20Commercial%20Support) to learn more.
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Our [trademark policy](https://therootcompany.com/legal/#trademark) is pretty much "attribute, but don't confuse". Your users should understand that your product _uses_ Greenlock and not be confused to think that it _is_ Greenlock.
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# Legal & Rules of the Road
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Greenlock™ is a [trademark](https://rootprojects.org/legal/#trademark) of AJ ONeal
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The rule of thumb is "attribute, but don't confuse". For example:
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> Built with [Greenlock.js](https://git.rootprojects.org/root/greenlock.js) (a [Root](https://rootprojects.org) project).
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Please [contact us](mailto:aj@therootcompany.com) if you have any questions in regards to our trademark,
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attribution, and/or visible source policies. We want to build great software and a great community.
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[Greenlock™](https://git.rootprojects.org/root/greenlock.js) |
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MPL-2.0 |
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[Terms of Use](https://therootcompany.com/legal/#terms) |
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[Privacy Policy](https://therootcompany.com/legal/#privacy)
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