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https://github.com/thamtech/yii2-jsonrpc-jwsauth

JWS Token Authentication over JSON RPC 2.0
https://github.com/thamtech/yii2-jsonrpc-jwsauth

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JWS Token Authentication over JSON RPC 2.0

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README

          

yii2-jsonrpc-jwsauth
====================

An extension to handle signed access token authentication via JSON RPC 2.0.

This library interfaces
with [yii2-json-rpc-2.0](http://github.com/cranetm/yii2-json-rpc-2.0) to provide
the JSON RPC 2.0 communication in your controller and
[namshi/jose](http://github.com/namshi/jose) to generate signed
[JWS](https://tools.ietf.org/html/rfc7515) tokens.

For license information check the [LICENSE](LICENSE.md)-file.

Installation
------------

The preferred way to install this extensions is through [composer](http://getcomposer.org/download/).

Either run
```
php composer.phar require --prefer-dist thamtech/yii2-jsonrpc-jwsauth
```
or add
```
"thamtech/yii2-jsonrpc-jwsauth": "*"
```
to the `require` section of your `composer.json` file.

Integration
-----------

1. [Generate a kepair using OpenSSL](https://en.wikibooks.org/wiki/Cryptography/Generate_a_keypair_using_OpenSSL)
and store the keys in public.pem and private.pem.

2. Add the JwsManager application component in your site configuration:

```php
return [
'components' => [
'jwsManager' => [
'class' => 'thamtech\jwsauth\components\JwsManager',
'pubkey' => '@app/config/keys/jwsauth/public.pem',
'pvtkey' => '@app/config/keys/jwsauth/private.pem',

// The settings below are optional. Defaults will be used if not set here.
//'encoder' => 'Namshi\JOSE\Base64\Base64UrlSafeEncoder',
//'refreshExp' => '24 hours',
//'exp' => '1 hour',
//'alg' => 'RS256',
//'jwsClass' => 'Namshi\JOSE\SimpleJWS',
],
]
]
```

3. Create a `UserController` in your application:

```php
class UserController extends \thamtech\jwsauth\controllers\UserController
{
// parent class provides actionAuthenticate($username, $passwrd)
// and actionRefreshToken()

// You may add your own additional methods to provide additional user
// management services such as registration, password changes, etc.
}
```

4. Update your `User` model to implement `\thamtech\jwsauth\models\IdentityInterface`
instead of `\yii\web\IdentityInterface`, and use the `SimpleUserTrait`:

```php
class User extends \yii\base\Object implements \thamtech\jwsauth\models\IdentityInterface
{
use SimpleUserTrait;

public $id;
public $username;

// You must still implement all methods required by \yii\web\IdentityInterface
// since \thamtech\jwsauth\models\IdentityInterface extends
// \yii\web\IdentityInterface
}
```

5. Add the JsonRpcAuth filter on any \JsonRpc2\Controller you would like
jwsauth-authenticated users to access:

```php
public function behaviors()
{
return [
'authenticator' => [
'class' => \thamtech\jwsauth\filters\auth\JsonRpcAuth::className(),
'except' => ['public-method-1', 'public-method-2'],
],
];
}
```

Client-Side Usage
-----------------

1. Make a JSON RPC request to the authenticate method passing in a username
and password.

```
http://yoursite/user
```
with data
```javascript
{
"jsonrpc": "2.0",
"id": 1,
"method": "authenticate",
"params": {
"username": "YOUR-USERNAME",
"password": "YOUR-PASSWORD"
}
}
```
and a successful response will be something like this
```javascript
{"jsonrpc":"2.0","id":1,"result":{"token":"eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXUyJ9.eyJpZCI6MT-TRIMMED_FOR_BREVITY"}}
```

2. Make a JSON RPC request to any controller/method requiring authentication
using the token provided in the previous step:

```
http://yoursite/protected-controller
```
with data
```javascript
{
"jsonrpc": "2.0",
"id": 2,
"auth": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXUyJ9.eyJpZCI6MT-TRIMMED_FOR_BREVITY",
"method": "access-sensitive-data",
"params": {"id": 27}
}
```

### Expiration and Refreshing Tokens

When the token expires (after 1 hour by default), you may refresh the token
without requiring the user to re-authenticate with username and password. This
is allowed up to the refresh expiration of a token (24 hours by default).

If you have a valid token and make an authenticated request but receive a
result like the following:
```javascript
{
"jsonrpc": "2.0",
"id": 3,
"error": {
"code": -32652,
"data": null,
"message": "Invalid or expired token"
}
}
```
then your next step is to try to refresh the token:
```
http://yoursite/user
```
with data
```javascript
{
"jsonrpc": "2.0",
"id": 4,
"auth": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXUyJ9.eyJpZCI6MT-TRIMMED_FOR_BREVITY",
"method": "refresh-token"
}
```

The response will either contain a new token which you may continue using
normally:
```javascript
{"jsonrpc":"2.0","id":4,"result":{"token":"eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXUyJ9.eyJpZCI6MT-TRIMMED_FOR_BREVITY"}}
```

Or an indication that the token could not be refreshed:
```javascript
{
"jsonrpc": "2.0",
"id": 3,
"error": {
"code": -32652,
"data": null,
"message": "expired; user must reauthenticate"
}
}
```

If the token could not be refreshed, then you will need to:

1. Ask the user to re-login with their username and password

2. Use the "authenticate" method in Step 1 of the Client-Side Usage section above
to get a new auth token.

3. Continue making authenticated requests with the new token.

Advanced Usage
--------------

* You do not have to use `SimpleUserTrait` in your User identity. It is merely
a convenience for most use cases. You are free to implement your own
`getAuthKey()` and `findIdentityByAccessToken()` methods directly in your
`User` identity class in a way that better suits your application's needs.

* Rather than instantiating a `UserController` as a sublcass, you could refer
to `\thamtech\jwsauth\controllers\UserController` directly in a controller map:

```php
[
'controllerMap' => [
// declares "login" controller using a class name
'login' => 'thamtech\jwsauth\controllers\UserController',
],
]
```

See Also
--------

* [cranetm/yii2-json-rpc-2.0](http://github.com/cranetm/yii2-json-rpc-2.0) - Yii 2
extension that helps turn your Controllers into JSON RPC 2.0 APIs.

* [namshi/jose](http://github.com/namshi/jose) - PHP implementation of the
JWS (JSON Web Signature) specification.

* [JSON Web Signature (JWS)](https://tools.ietf.org/html/rfc7515) - JWS specifications