README

Sentinel is a Laravel package designed for the OREMIS ecosystem. It provides a centralized mechanism for validating API tokens against the OREMIS Identity Provider (Data) and managing access control via abilities.

This package allows client applications (like App, Pio, etc.) to offload authentication and authorization logic to a central authority while maintaining high performance through local caching.

Features

• Remote Token Validation: Validates Bearer tokens against the OREMIS Identity Provider.
• Ability-Based Access Control: Checks if a token has the required permissions (abilities).
• Context Awareness: Distinguishes between User tokens (user_id) and Service Account tokens (service_id).
• Performance: Caches validation results locally to minimize network requests.
• Laravel Integration: Provides Middleware, Facades, and a Service Provider for seamless integration.

Compatibility

• Laravel: 10.x, 11.x, 12.x, 13.x
• PHP: 8.3, 8.4, 8.5

Installation

Install the package via Composer:

composer require oremis/sentinel

The package will automatically register its Service Provider and Facade.

Configuration

Publish the configuration file to your application:

php artisan vendor:publish --tag=sentinel-config

This will create config/sentinel.php. You can configure the behavior using environment variables in your .env file:

# The base URL of the OREMIS Identity Provider
SENTINEL_BASE_URL=https://data.oremis.dev

# The endpoint used to validate tokens
SENTINEL_VALIDATE_ENDPOINT=/api/validate-token

# How long (in seconds) to cache the validation result
SENTINEL_CACHE_TTL=15

Middleware Registration (Laravel 11+)

In Laravel 11, you may need to manually register the middleware aliases in your bootstrap/app.php file to use them as string aliases in your routes.

// bootstrap/app.php

use Illuminate\Foundation\Application;
use Illuminate\Foundation\Configuration\Middleware;

return Application::configure(basePath: dirname(__DIR__))
    ->withRouting(
        web: __DIR__.'/../routes/web.php',
        api: __DIR__.'/../routes/api.php',
        commands: __DIR__.'/../routes/console.php',
        health: '/up',
    )
    ->withMiddleware(function (Middleware $middleware) {
        $middleware->alias([
            'remote.token'     => \Oremis\Sentinel\Middleware\CheckRemoteToken::class,
            'sentinel.ability' => \Oremis\Sentinel\Middleware\CheckAbility::class,
        ]);
    })
    ->withExceptions(function (Exceptions $exceptions) {
        //
    })
    ->create();

How It Works

1. Incoming Request: An API request arrives at your application with a Authorization: Bearer <token> header.
2. Middleware Interception: The remote.token middleware intercepts the request.
3. Cache Check: It checks if the token's validity is already cached locally.
4. Remote Validation: If not cached, it sends a request to the configured Identity Provider (SENTINEL_BASE_URL).
   • The IDP returns the token's validity, associated abilities, and the owner (User or Service).
5. Context Injection: The middleware injects the abilities, token_user_id, and token_service_id into the request attributes.
6. Authorization: The sentinel.ability middleware (if used) checks if the injected abilities match the route requirements.

Usage

1. Protecting Routes

Apply the middleware to your API routes. You typically need remote.token to validate the user, and optionally sentinel.ability to enforce permissions.

use Illuminate\Support\Facades\Route;

Route::middleware(['remote.token'])->group(function () {

    // Route accessible to any valid token
    Route::get('/profile', function () {
        // ...
    });

    // Route requiring specific abilities
    Route::middleware('sentinel.ability:ca.gdpr:create')->post('/gdpr-records', function () {
        // ...
    });

    // Route requiring ANY of the listed abilities
    Route::middleware('sentinel.ability:admin,editor')->group(function () {
        // ...
    });
});

2. Using the Facade

You can use the TokenAbility facade within your controllers or services to check permissions or retrieve context.

use Oremis\Sentinel\Facades\TokenAbility;

public function store()
{
    // Check for a specific ability
    if (TokenAbility::can('ca.gdpr:delete')) {
        // ...
    }

    // Enforce an ability (throws 403 if missing)
    TokenAbility::require('ca.gdpr:create');

    // Get the ID of the authenticated user (if it's a user token)
    $userId = TokenAbility::userId();

    // Get the ID of the service account (if it's a service token)
    $serviceId = TokenAbility::serviceId();

    // Get all abilities
    $abilities = TokenAbility::abilities();
}

3. Response Structure

The package expects the Identity Provider to return data in the following format:

{
  "data": {
    "valid": true,
    "abilities": ["ca.gdpr:create", "user.read"],
    "service_id": 2,
    "user_id": null
  }
}

• valid: Boolean indicating if the token is active.
• abilities: Array of permission strings.
• service_id: Integer ID if the token belongs to a service account (otherwise null).
• user_id: Integer ID if the token belongs to a user (otherwise null).

License

AGPL-3.0-or-later