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<?php |
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namespace App\Application\Middleware; |
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use App\Infrastructure\JsCacheBusting\JsImportCacheBuster; |
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use App\Infrastructure\Settings\Settings; |
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use App\Module\User\Read\Service\UserReadAuthorizationChecker; |
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use Cake\Database\Exception\DatabaseException; |
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use Odan\Session\SessionInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Slim\App; |
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use Slim\Interfaces\RouteParserInterface; |
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use Slim\Routing\RouteContext; |
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use Slim\Views\PhpRenderer; |
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/** |
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* Adds attributes to the PhpRenderer and updates js imports with version number. |
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* Documentation: https://samuel-gfeller.ch/docs/Template-Rendering. |
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*/ |
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final class PhpViewMiddleware implements MiddlewareInterface |
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{ |
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/** @var array<string, mixed> */ |
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private array $publicSettings; |
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/** @var array<string, mixed> */ |
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private array $deploymentSettings; |
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public function __construct( |
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/** @var App<\Psr\Container\ContainerInterface> $app */ |
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private readonly App $app, |
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private readonly PhpRenderer $phpRenderer, |
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private readonly SessionInterface $session, |
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private readonly JsImportCacheBuster $jsImportCacheBuster, |
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Settings $settings, |
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private readonly UserReadAuthorizationChecker $userReadAuthorizationChecker, |
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private readonly RouteParserInterface $routeParser, |
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) { |
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$this->publicSettings = $settings->get('public'); |
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$this->deploymentSettings = $settings->get('deployment'); |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$loggedInUserId = $this->session->get('user_id'); |
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// The following has to work even with no connection to mysql to display the error page (layout needs those attr) |
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$this->phpRenderer->setAttributes([ |
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'version' => $this->deploymentSettings['version'], |
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'uri' => $request->getUri(), |
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'basePath' => $this->app->getBasePath(), |
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'route' => $this->routeParser, |
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'currRouteName' => RouteContext::fromRequest($request)->getRoute()?->getName(), |
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'flash' => $this->session->getFlash(), |
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// Used for public values used by view like company email address |
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'config' => $this->publicSettings, |
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'authenticatedUser' => $loggedInUserId, |
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]); |
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// Check and set user list authorization for "users" nav point |
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if ($loggedInUserId) { |
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// Check if the authenticated user is allowed to see user list |
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// Add the user list authorization as an attribute to the PhpRenderer |
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$this->phpRenderer->addAttribute( |
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'userListAuthorization', |
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$this->checkUserListAuthorization($loggedInUserId) |
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); |
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} |
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// Add version number to js imports |
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if ($this->deploymentSettings['update_js_imports_version'] === true) { |
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$this->jsImportCacheBuster->addVersionToJsImports(); |
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} |
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return $handler->handle($request); |
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} |
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/** |
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* Check if the user is allowed to see the user list. |
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* |
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* @param int $loggedInUserId |
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* |
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* @return bool |
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*/ |
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private function checkUserListAuthorization(int $loggedInUserId): bool |
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{ |
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try { |
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// If the authenticated user is allowed to read another user (id + 1), the user list can be displayed |
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return $this->userReadAuthorizationChecker->isGrantedToRead($loggedInUserId + 1, false); |
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} catch (DatabaseException $databaseException) { |
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// Mysql connection not working. Caught here to prevent error page from crashing |
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return false; |
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} |
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} |
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} |
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samuelgfeller /
slim-example-project
