Implemented controller permissions

6 files changed, 89 insertions, 1 deletions

diff --git a/src/Controllers/BaseController.php b/src/Controllers/BaseController.php
index 6a27a066..cbc00931 100644
--- a/src/Controllers/BaseController.php
+++ b/src/Controllers/BaseController.php
@@ -4,5 +4,16 @@ namespace Engelsystem\Controllers;
 
 abstract class BaseController
 {
+    /** @var string[]|string[][] A list of Permissions required to access the controller or certain pages */
+    protected $permissions = [];
 
+    /**
+     * Returns the list of permissions
+     *
+     * @return string[]|string[][]
+     */
+    public function getPermissions()
+    {
+        return $this->permissions;
+    }
 }
diff --git a/src/Helpers/AuthenticatorServiceProvider.php b/src/Helpers/AuthenticatorServiceProvider.php
index b7508b01..715a592f 100644
--- a/src/Helpers/AuthenticatorServiceProvider.php
+++ b/src/Helpers/AuthenticatorServiceProvider.php
@@ -13,5 +13,6 @@ class AuthenticatorServiceProvider extends ServiceProvider
 
         $this->app->instance(Authenticator::class, $authenticator);
         $this->app->instance('authenticator', $authenticator);
+        $this->app->instance('auth', $authenticator);
     }
 }
diff --git a/src/Http/Exceptions/HttpForbidden.php b/src/Http/Exceptions/HttpForbidden.php
new file mode 100644
index 00000000..01c0a5ec
--- /dev/null
+++ b/src/Http/Exceptions/HttpForbidden.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Engelsystem\Http\Exceptions;
+
+use Throwable;
+
+class HttpForbidden extends HttpException
+{
+    /**
+     * @param string         $message
+     * @param array          $headers
+     * @param int            $code
+     * @param Throwable|null $previous
+     */
+    public function __construct(
+        string $message = '',
+        array $headers = [],
+        int $code = 0,
+        Throwable $previous = null
+    ) {
+        parent::__construct(403, $message, $headers, $code, $previous);
+    }
+}
diff --git a/src/Http/Request.php b/src/Http/Request.php
index 0d8d28b4..06900a18 100644
--- a/src/Http/Request.php
+++ b/src/Http/Request.php
@@ -363,7 +363,7 @@ class Request extends SymfonyRequest implements ServerRequestInterface
         foreach ($uploadedFiles as $file) {
             /** @var UploadedFileInterface $file */
             $filename = tempnam(sys_get_temp_dir(), 'upload');
-            $handle = fopen($filename, "w");
+            $handle = fopen($filename, 'w');
             fwrite($handle, $file->getStream()->getContents());
             fclose($handle);
 
diff --git a/src/Middleware/CallableHandler.php b/src/Middleware/CallableHandler.php
index eb493bf1..0bb666a3 100644
--- a/src/Middleware/CallableHandler.php
+++ b/src/Middleware/CallableHandler.php
@@ -74,4 +74,12 @@ class CallableHandler implements MiddlewareInterface, RequestHandlerInterface
         $response = $this->container->get('response');
         return $response->withContent($return);
     }
+
+    /**
+     * @return callable
+     */
+    public function getCallable()
+    {
+        return $this->callable;
+    }
 }
diff --git a/src/Middleware/RequestHandler.php b/src/Middleware/RequestHandler.php
index ebe1ff9e..b0fc664f 100644
--- a/src/Middleware/RequestHandler.php
+++ b/src/Middleware/RequestHandler.php
@@ -3,6 +3,9 @@
 namespace Engelsystem\Middleware;
 
 use Engelsystem\Application;
+use Engelsystem\Controllers\BaseController;
+use Engelsystem\Helpers\Authenticator;
+use Engelsystem\Http\Exceptions\HttpForbidden;
 use InvalidArgumentException;
 use Psr\Http\Message\ResponseInterface;
 use Psr\Http\Message\ServerRequestInterface;
@@ -37,6 +40,14 @@ class RequestHandler implements MiddlewareInterface
         $requestHandler = $request->getAttribute('route-request-handler');
         $requestHandler = $this->resolveRequestHandler($requestHandler);
 
+        if ($requestHandler instanceof CallableHandler) {
+            $callable = $requestHandler->getCallable();
+
+            if (is_array($callable) && $callable[0] instanceof BaseController) {
+                $this->checkPermissions($callable[0], $callable[1]);
+            }
+        }
+
         if ($requestHandler instanceof MiddlewareInterface) {
             return $requestHandler->process($request, $handler);
         }
@@ -49,6 +60,8 @@ class RequestHandler implements MiddlewareInterface
     }
 
     /**
+     * Resolve the given class
+     *
      * @param string|callable|MiddlewareInterface|RequestHandlerInterface $handler
      * @return MiddlewareInterface|RequestHandlerInterface
      */
@@ -76,4 +89,36 @@ class RequestHandler implements MiddlewareInterface
 
         return $this->resolveMiddleware($handler);
     }
+
+    /**
+     * Check required page permissions
+     *
+     * @param BaseController $controller
+     * @param string         $method
+     * @return bool
+     */
+    protected function checkPermissions(BaseController $controller, string $method): bool
+    {
+        /** @var Authenticator $auth */
+        $auth = $this->container->get('auth');
+        $permissions = $controller->getPermissions();
+
+        // Merge action permissions
+        if (isset($permissions[$method])) {
+            $permissions = array_merge($permissions, (array)$permissions[$method]);
+        }
+
+        foreach ($permissions as $key => $permission) {
+            // Skip all action permission entries
+            if (!is_int($key)) {
+                continue;
+            }
+
+            if (!$auth->can($permission)) {
+                throw new HttpForbidden();
+            }
+        }
+
+        return true;
+    }
 }