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https://github.com/authbroker/authbroker

Authentication and Authorization module of HTTP/MQTT/CoAP Brokers based on NodeJS for IoT or Internet of Things.
https://github.com/authbroker/authbroker

aedes authentication authorization broker coap http internet-of-things iot mosca mqtt ponte

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Authentication and Authorization module of HTTP/MQTT/CoAP Brokers based on NodeJS for IoT or Internet of Things.

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# Authentication and Authorization Module for Brokers

[![Open Source Love](https://badges.frapsoft.com/os/v1/open-source.svg?v=103)](https://github.com/ellerbrock/open-source-badges/) [![Build Status](https://travis-ci.org/authbroker/authbroker.svg)](https://travis-ci.com/authbroker/authbroker)



Authentication and Authorization module of HTTP/MQTT/CoAP Brokers based on NodeJS for IoT or Internet of Things. This repo is under development.

## Getting Started

* Install [Keycloak](https://www.keycloak.org/) locally. Make sure it's working.
* If you want to run a test locally, clone this repo.

``` bash
git clone https://github.com/authbroker/authbroker
cd authbroker
npm install
bash run-test.sh
# visit http://localhost:8080
# with username 'admin' and password 'admin'
npm run test

# for stopping docker instance you use this
docker stop $(docker ps -a -q --filter ancestor=authbroker:test --format="{{.ID}}")
```

It runs Keycloak by docker and import demo data to IOT_Realm realm. An example Broker runs that used auhtBroker by:

``` bash
node ./example/broker.js
```
these below commands Subscribe and Publish to broker.

```bash
mosquitto_sub -h localhost -p 1883 -t garden/fan -u admin -P admin

mosquitto_pub -h localhost -p 1883 -t garden/fan -m "hello world" -u admin -P admin
```

if username/password or authorization permission in Keycloak changes, authBroker authorization will not permitted to broker. for example change topic to unauthorized topic like garden/unathorized and see how broker reject it.

## How Using it
This module use Node-style callback and it can be used with different brokers like [Aedes](https://github.com/mcollina/aedes).

``` js
const aedes = require("aedes")({
persistence: new require("aedes-persistence")()
});
const server = require("net").createServer(aedes.handle);
const port = 1883;

const authBroker = require('@authbroker/authbroker');

const config = {
"realm": "IOT_Realm",
"authUrl": "http://localhost:8080/auth",
"sslRequired": "external",
"clientId": "authBroker",
"verifyTokenAudience": true,
"credentials": {
"secret": "secret"
},
"confidentialPort": 0,
"policyEnforcer": {},
"mqttpubScope": "scopes:mqttpub", // scope text for pub permission
"mqttsubScope": "scopes:mqttsub", // scope text for pub permission
"mqttResPerfix": "res:" // prefix text for resource or topic
};

const authbroker = new authBroker(config)

// hook it up
aedes.authenticate = authbroker.authenticate();
aedes.authorizeSubscribe = authbroker.authorizeSubscribe();
aedes.authorizePublish = authbroker.authorizePublish();

server.listen(port, function () {
console.log("server listening on port", port);
});
```

It's necessary to set these scopes in Authorization section in Keycloak.
By defualt 'scopes:mqttpub' is set for Publish permission and 'scopes:mqttsub' is set for Subscription permission.

![Keycloak Scopes](./images/keycloak-scope.png)

Users can Publish or Subscribe to resources which has a scope 'scopes:mqttpub' or 'scopes:mqttsub'.

![Keycloak Resource](./images/keycloak-res.png)

run-test.sh script runs a preconfigured Keycloak Demo version that can be used as a template.

```bash
bash run-test.sh
```
then visit http://localhost:8080 with username 'admin' and password 'admin' in Admin console.

## Contributing

[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/dwyl/esta/issues)

Anyone with interest in or experience with the following technologies are encouraged to join the project.
And if you fancy it, join the [Telegram group](t.me/joinchat/AuKmG05CNFTz0bsBny9igg) here for Devs and say Hello!

## Authors / Contributors

* [Hadi Mahdavi](https://twitter.com/kamerdack)

## Credits / Inspiration

* Matteo Collina for Mosca, Aedes, Ponte (https://github.com/moscajs/aedes)
* Eugenio Pace for Auth0 Mosca inspiration (https://github.com/eugeniop/auth0mosca)

## Copyright

MIT - Copyright (c) 2019-2022 ioKloud