Laravel OAuth Single Sign-On (SSO) plugin gives the ability to enable OAuth Single Sign-On for your laravel applications. Using Single Sign-On you can use only one password to access your laravel application and services. Our plugin is compatible with all the OAuth compliant Identity providers. Here we will go through a step-by-step guide to configure Single Sign-On (SSO) between Laravel and Laravel Passport considering Laravel Passport as OAuth provider. To know more about other features we provide in Laravel OAuth client single-sign-on-sso plugin, you can click here.

Installation Laravel Oauth Client

• Open a Command Prompt window and change the working directory to your Laravel app's main directory and install the Laravel OAuth plugin using below command.

• composer require miniorange/oauth-laravel-free

• After successful installation of package, go to your Laravel app in the browser and enter {laravel-application-domain}/mo_oauth_admin
• The package will start setting up your database for you and then redirect you to the admin registration page.
• Register or log in with your miniOrange account to configure the plugin.

• After login, you will see the OAuth provider Settings option, where you will get the Redirect/Callback URL. Keep it handy as it will be required later to configure Laravel Passport Single Sign-On (SSO).

Steps to configure Laravel Passport Single Sign-On (SSO) Login into Laravel

1. Configure Laravel Passport as OAuth Provider

• Install laravel passport using below command
composer require laravel/passport
• Go to config/app.php and add below provider
Laravel\Passport\PassportServiceProvider::class
• Run php artisan migrate command
• Run php artisan passport:install command
• Go to app/Models/User.php model class, add HasApiTokens trait to the code:

     
    namespace App;
    use Laravel\Passport\HasApiTokens;
    use Illuminate\Contracts\Auth\MustVerifyEmail;
    use Illuminate\Foundation\Auth\User as Authenticatable;
    use Illuminate\Notifications\Notifiable;
     
    class User extends Authenticatable
    {
      use HasApiTokens, Notifiable;
     
      
        /**
         * The attributes that are mass assignable.
         *
         * @var array
        */
        protected $fillable = [
            'name', 'email', 'password',
        ];
     
        /**
         * The attributes that should be hidden for arrays.
         *
         * @var array
         */
        protected $hidden = [
            'password', 'remember_token',
        ];
     
        /**
         * The attributes that should be cast to native types.
         *
         * @var array
         */
       
        protected $casts = [
            'email_verified_at' => 'datetime',
        ];
    }
    
    
    

• For Laravel version 9.0 below: Go to app/Providers/AuthServiceProvider.php, add use Laravel\Passport\Passport; , Passport::routes(); routes to the service code is given below:

    
    namespace App\Providers;
    use Laravel\Passport\Passport;
    use Illuminate\Foundation\Support\Providers\AuthServiceProvider as ServiceProvider;
    use Illuminate\Support\Facades\Gate;
     
    class AuthServiceProvider extends ServiceProvider
    {
    
        /**
         * The policy mappings for the application.
         *
         * @var array
         */
        protected $policies = [
            // 'App\Model' => 'App\Policies\ModelPolicy',
        ];
     
        /**
         * Register any authentication / authorization services.
         *
         * @return void
         */
        public function boot()
        {
            $this->registerPolicies();
            Passport::routes();
            //
        }
    }
    

• Go to config/auth.php change the api driver token to passport as we are going to use Passport library.

    'guards' => [
            'web' => [
                'driver' => 'session',
                'provider' => 'users',
            ],
               'api' => [
                'driver' => 'passport',
                'provider' => 'users',
               'hash' => false,
            ],
        ],
    

• To create a UserInfo endpoint manually, in the app/Http/Controllers, create a file UserController.php:

    <?php
    namespace App\Http\Controllers;
    use App\Http\Controllers\Controller;
    use Illuminate\Http\Request;
    use App\Models\User;
    use Auth;
    class UserController extends Controller
    {
        public function get(Request $request)
        {
          $user_id = Auth::id();
          $user = User::find($user_id);
          return $user;
        }
    }
    

• Also, register the API route by adding the below line in routes/api.php file:

    //For Laravel below 8 and migrated to the 8 version:
    Route::middleware('auth:api')->get('/user/get', 'UserController@get');
     

OR

    //For Laravel 8 new users:
    use App\Http\Controllers\UserController;                                                                       
     Route::middleware('auth:api')->get('/user/get', 'App\Http\Controllers\UserController@get');
    

• To get Client ID and Client Secret run following commands: php artisan passport:client It will ask you the following questions:

     Which user ID should the client be assigned to?:
     > 1
     
     What should we name the client?
     > Demo OAuth2 Client Account
     
     Where should we redirect the request after authorization?
     [http://localhost/auth/callback]
     
    > Click Here to copy the Redirect URL.
      
    New client created successfully.
    
    Client ID: 1
    Client secret: zMm0tQ9Cp7LbjK3QTgPy1pssoT1X0u7sg0YWUW01
    

2. Configure Laravel OAuth client plugin for Laravel Passport

• Go to the miniOrange Laravel OAuth SSO plugin and click on Choose Laravel Passport as OAuth provider.

• Enter the Client ID and Client Secret from Laravel Passport App.

• Please refer the below table for configuring the Scope and Endpoints .

Scope:	Leave the Scope Field empty
Authorize Endpoint:	http://your-laravel-site-url/oauth/authorize
Access Token Endpoint:	http://your-laravel-site-url/oauth/token
Get UserInfo Endpoint:	http://your-laravel-site-url/api/user/get

• You can send the client credentials in header or body and also send state parameter accordingly also enter login attribute as per your requirement.

• Click on save settings button. After that, Click on test configuration button. you will get the list of Attribute Names and Attribute Values that are sent by your OAuth provider

3. SSO Options

• You can also use a link to login via your OAuth/OpenID provider.
• This link is in the format:

  {laravel-application-domain}/ssologin.php?option=oauthredirect

In this Guide, you have successfully configured Laravel Passport Single Sign-On (SSO) using Laravel as OAuth Client. This solution ensures that you are ready to roll out secure access to your Laravel site using Laravel Passport login credentials within minutes.

Additional Resources

• Guide For Single Sign On (SSO)
• Laravel Installation