acme-dns-01-test.js/README.md

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# [acme-dns-01-test](https://git.rootprojects.org/root/acme-dns-01-test.js.git) | a [Root](https://rootprojects.org) project
An ACME dns-01 test harness for Let's Encrypt integrations.
This was specificially designed for [ACME.js](https://git.coolaj86.com/coolaj86/acme-v2.js) and [Greenlock.js](https://git.coolaj86.com/coolaj86/greenlock-express.js), but will be generically useful to any ACME module.
Passing the tests is very easy. There are just five functions to implement:
- `init(deps)` - (optional) this gives you the `request` object you should use for HTTP APIs
- `zones(opts)` - list domain zones (i.e. example.co.uk, example.com)
- `set(opts)` - set a TXT record in a zone (i.e. `_acme-challenge.foo` in `example.co.jp`)
- `get(opts)` - confirm that the record was set
- `remove(opts)` - clean up after the ACME challenge completes
The tests account for single-domain certificates (`example.com`) as well as multiple domain certs (SAN / AltName),
wildcards (`*.example.com`), and valid private / localhost certificates. No worries on your end, just pass the tests. 👌
**Node v6 Support**: Please build community plugins using node v6 / vanillajs
to ensure that all acme.js and greenlock.js users are fully supported.
## Install
```bash
npm install --save-dev acme-dns-01-test@3.x
```
## Usage
```js
var tester = require('acme-dns-01-test');
//var challenger = require('acme-dns-01-cli').create({});
var challenger = require('./YOUR-CHALLENGE-STRATEGY').create({
YOUR_TOKEN_OPTION: 'SOME_API_KEY'
});
// The dry-run tests can pass on, literally, 'example.com'
// but the integration tests require that you have control over the domain
var zone = 'example.com';
tester.testZone('dns-01', zone, challenger).then(function() {
console.info('PASS');
});
```
**Note**: If the service you are testing only handles individual records
(not multiple records in a zone), you can use `testRecord` instead:
```js
var record = 'foo.example.com';
tester.testRecord('dns-01', record, challenger).then(function() {
console.info('PASS');
});
```
## Reference Implementations
- Compatibility
- [x] Let's Encrypt v2.1 / ACME draft 18
- [x] Node v6+
- [x] Chrome, Firefox, Safari, Edge, etc
- Quality
- [x] Written in VanillaJS
- [x] No compliers or build scripts
- [x] Simple, minimal code, in a single file
- [x] **Zero dependencies**
These libraries are useful as a model for any plugins that you create.
- dns-01
- [`cli`](https://git.rootprojects.org/root/acme-dns-01-cli.js)
- [`digitalocean`](https://git.rootprojects.org/root/acme-dns-01-digitalocean.js)
- [`vultr`](https://git.rootprojects.org/root/acme-dns-01-vultr.js)
- [`gandi`](https://git.rootprojects.org/root/acme-dns-01-gandi.js)
- [`duckdns`](https://git.rootprojects.org/root/acme-dns-01-duckdns.js)
- http-01
- [`cli`](https://git.rootprojects.org/root/acme-http-01-cli.js)
- [`fs`](https://git.rootprojects.org/root/acme-http-01-fs.js)
You can find other implementations by searching npm for [acme-http-01-](https://www.npmjs.com/search?q=acme-http-01-)
and [acme-dns-01-](https://www.npmjs.com/search?q=acme-dns-01-).
If you are building a plugin, please let us know.
We may like to co-author and help maintain and promote your module.
<small>Note: In some cases (such as non-HTTP, or very complex APIs) you will not be able to maintain
browser compatibility. Other than than, if you keep your code simple, it will also work in browser
implementations of ACME.js.</small>
## Example
See `example.js` (it works).
## Starter Template
Here's what you could start with.
```js
var tester = require('acme-dns-01-test');
// The dry-run tests can pass on, literally, 'example.com'
// but the integration tests require that you have control over the domain
var zone = 'example.com';
var request;
tester
.testZone('dns-01', zone, {
// Gives you the promisified `request` object for HTTP APIs
init: function(deps) {
request = deps.request;
return null;
},
// Should return an array of zone domain name strings
// (APIs that don't implement zones, such as DuckDNS, should return an empty array)
zones: function(opts) {
console.log('dnsHosts:', opts.dnsHosts);
throw new Error('_zone not implemented');
},
// Should set a TXT record for dnsHost with dnsAuthorization and ttl || 300
set: function(opts) {
console.log('set opts:', opts);
throw new Error('set not implemented');
},
// Should remove the *one* TXT record for dnsHost with dnsAuthorization
// Should NOT remove otherrecords for dnsHost (wildcard shares dnsHost with
// non-wildcard)
remove: function(opts) {
console.log('remove opts:', opts);
throw new Error('remove not implemented');
},
// Should get the record via the DNS server's API
// (Note: gets different options than set or remove)
get: function(opts) {
console.log('get opts:', opts);
throw new Error('get not implemented');
}
})
.then(function() {
console.info('PASS');
});
```
## dns-01 vs http-01
For `type` dns-01:
// `dnsHost` is the domain/subdomain/host
// `dnsAuthorization` is the value of the TXT record
// `dnsPrefix` is the record-only part, if `zones()` is implemented
// `dnsZone` is the zone-only part, if `zones()` is implemented
For `type` http-01:
// `altname` is the name of the domain
// `token` is the name of the file ( .well-known/acme-challenge/`token` )
// `keyAuthorization` is the contents of the file
See [acme-http-01-test.js](https://git.rootprojects.org/root/acme-dns-01-test.js.git).
## Detailed Overview
Here's a quick pseudo stub-out of what a test-passing plugin object might look like:
```js
var request;
tester
.testZone('dns-01', 'example.com', {
init: function(deps) {
// { request: { get, post, put, delete }
// }
request = deps.request;
return null;
},
zones: function(opts) {
// { dnsHosts: [
// '_acme-challenge.foo.example.com',
// '_acme-challenge.bar.example.com'
// ] }
return YourApi(
'GET',
// Most Domain Zone apis don't have a search or filter option,
// but `opts` includes list of dnsHosts is provided just in case.
'https://exampledns.com/api/dns/zones?search=' + opts.dnsHosts.join(',')
).then(function(result) {
return result.zones.map(function(zone) {
return zone.name;
});
});
},
set: function(opts) {
var ch = opts.challenge;
// { type: 'dns-01'
// , identifier: { type: 'dns', value: 'foo.example.com' }
// , wildcard: false
// , dnsHost: '_acme-challenge.foo.example.com'
// , dnsPrefix: '_acme-challenge.foo'
// , dnsZone: 'example.com'
// , dnsAuthorization: 'zzzz' }
return YourApi(
'POST',
'https://exampledns.com/api/dns/txt/' + ch.dnsZone + '/' + ch.dnsPrefix,
{ value: ch.dnsAuthorization }
);
},
get: function(query) {
var ch = query.challenge;
// { type: 'dns-01'
// , identifier: { type: 'dns', value: 'foo.example.com' }
// , altname: '...'
// , dnsHost: '...'
// , wildcard: false }
// Note: query.identifier.value is different for http-01 than for dns-01
// because of how a DNS query is different from an HTTP request
return YourApi(
'GET',
'https://exampledns.com/api/dns/txt/' + ch.dnsZone + '/' + ch.dnsPrefix
).then(function(secret) {
return { dnsAuthorization: secret };
});
},
remove: function(opts) {
var ch = opts.challenge;
// same options as in `set()` (which are not the same as `get()`
return YourApi(
'DELETE',
'https://exampledns.com/api/dns/txt/' + ch.dnsZone + '/' + ch.dnsPrefix
);
}
})
.then(function() {
console.info('PASS');
});
```
Where `YourApi` might look something like this:
```js
var YourApi = function createApi(config) {
return function(method, url, body) {
return request({
method: method,
url: url,
json: body || true,
headers: {
Authorization: 'Bearer ' + config.apiToken
}
}).then(function(resp) {
return resp.body;
});
};
};
```
Note: `request` is actually `@root/request`, but the API is the same as the standard `request`.
Avoid using 3rd party API libraries where you can - they tend to bloat your dependencies and
add security risk. Instead, just use the API documentation and cURL examples.
### Two notes:
Note 1:
The `API.get()`, `API.set()`, and `API.remove()` is where you do your magic up to upload a file to the correct
location on an http serever, set DNS records, or add the appropriate data to the database that handles such things.
Note 2:
- When `altname` is `foo.example.com` the `dnsHost` will be `_acme-challenge.foo.example.com`
- When `altname` is `*.foo.example.com` the `dnsHost` will _still_ be `_acme-challenge.foo.example.com`!!
- When `altname` is `bar.foo.example.com` the `dnsHost` will be `_acme-challenge.bar.foo.example.com`