application/front/ShaarliMiddleware.php

   1 <?php
   2
   3 namespace Shaarli\Front;
   4
   5 use Shaarli\Container\ShaarliContainer;
   6 use Shaarli\Front\Exception\ShaarliFrontException;
   7 use Shaarli\Front\Exception\UnauthorizedException;
   8 use Slim\Http\Request;
   9 use Slim\Http\Response;
  10
  11 /**
  12  * Class ShaarliMiddleware
  13  *
  14  * This will be called before accessing any Shaarli controller.
  15  */
  16 class ShaarliMiddleware
  17 {
  18     /** @var ShaarliContainer contains all Shaarli DI */
  19     protected $container;
  20
  21     public function __construct(ShaarliContainer $container)
  22     {
  23         $this->container = $container;
  24     }
  25
  26     /**
  27      * Middleware execution:
  28      *   - execute the controller
  29      *   - return the response
  30      *
  31      * In case of error, the error template will be displayed with the exception message.
  32      *
  33      * @param  Request  $request  Slim request
  34      * @param  Response $response Slim response
  35      * @param  callable $next     Next action
  36      *
  37      * @return Response response.
  38      */
  39     public function __invoke(Request $request, Response $response, callable $next)
  40     {
  41         $this->container->basePath = rtrim($request->getUri()->getBasePath(), '/');
  42
  43         try {
  44             $response = $next($request, $response);
  45         } catch (ShaarliFrontException $e) {
  46             $this->container->pageBuilder->assign('message', $e->getMessage());
  47             if ($this->container->conf->get('dev.debug', false)) {
  48                 $this->container->pageBuilder->assign(
  49                     'stacktrace',
  50                     nl2br(get_class($this) .': '. $e->getTraceAsString())
  51                 );
  52             }
  53
  54             $response = $response->withStatus($e->getCode());
  55             $response = $response->write($this->container->pageBuilder->render('error'));
  56         } catch (UnauthorizedException $e) {
  57             return $response->withRedirect($this->container->basePath . '/login');
  58         }
  59
  60         return $response;
  61     }
  62 }