[TASK] Show ordered PSR-15 middlewares in Configuration module

In order to find out what middlewares are called in which order,
the Configuration module now has an additional list of all
registered middlewares for "frontend" and "backend" stack.

Resolves: #83882
Releases: master
Change-Id: I99d8478bb07437efa65d292221ccdb03d5dd3161
Reviewed-on: https://review.typo3.org/55597


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>

typo3/sysext/lowlevel/Classes/Controller/ConfigurationController.php

@@ -20,7 +20,12 @@ use Psr\Http\Message\ServerRequestInterface;
 use TYPO3\CMS\Backend\Routing\Router;
 use TYPO3\CMS\Backend\Template\ModuleTemplate;
 use TYPO3\CMS\Core\Authentication\BackendUserAuthentication;
+use TYPO3\CMS\Core\Cache\Backend\NullBackend;
+use TYPO3\CMS\Core\Cache\Frontend\PhpFrontend;
+use TYPO3\CMS\Core\Http\MiddlewareStackResolver;
 use TYPO3\CMS\Core\Localization\LanguageService;
+use TYPO3\CMS\Core\Package\PackageManager;
+use TYPO3\CMS\Core\Service\DependencyOrderingService;
 use TYPO3\CMS\Core\Utility\ArrayUtility;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Fluid\View\StandaloneView;
@@ -99,6 +104,10 @@ class ConfigurationController
             'label' => 'routes',
             'type' => 'routes',
         ],
+        'httpMiddlewareStacks' => [
+            'label' => 'httpMiddlewareStacks',
+            'type' => 'httpMiddlewareStacks',
+        ],
     ];
 
     /**
@@ -163,6 +172,7 @@ class ConfigurationController
         $moduleState['regexSearch'] = (bool)($postValues['regexSearch'] ?? $moduleState['regexSearch'] ?? false);
 
         // Prepare main array
+        $sortKeysByName = true;
         if ($selectedTreeDetails['type'] === 'global') {
             $globalArrayKey = $selectedTreeDetails['globalKey'];
             $renderArray = $GLOBALS[$globalArrayKey];
@@ -201,10 +211,33 @@ class ConfigurationController
                     'options' => $route->getOptions()
                 ];
             }
+        } elseif ($selectedTreeDetails['type'] === 'httpMiddlewareStacks') {
+            // Keep the order of the keys
+            $sortKeysByName = false;
+            // Fake a PHP frontend with a null backend to avoid PHP Opcache conflicts
+            // When using >requireOnce() multiple times in one request
+            $cache = GeneralUtility::makeInstance(
+                PhpFrontend::class,
+                'middleware',
+                GeneralUtility::makeInstance(NullBackend::class, 'Production')
+            );
+            $stackResolver = GeneralUtility::makeInstance(
+                MiddlewareStackResolver::class,
+                GeneralUtility::makeInstance(PackageManager::class),
+                GeneralUtility::makeInstance(DependencyOrderingService::class),
+                $cache
+            );
+            $renderArray = [];
+            foreach (['frontend', 'backend'] as $stackName) {
+                // reversing the array allows the admin to read the stack from top to bottom
+                $renderArray[$stackName] = array_reverse($stackResolver->resolve($stackName));
+            }
         } else {
             throw new \RuntimeException('Unknown array type "' . $selectedTreeDetails['type'] . '"', 1507845662);
         }
-        ArrayUtility::naturalKeySortRecursive($renderArray);
+        if ($sortKeysByName) {
+            ArrayUtility::naturalKeySortRecursive($renderArray);
+        }
 
         // Prepare array renderer class, apply search and expand / collapse states
         $arrayBrowser = GeneralUtility::makeInstance(ArrayBrowser::class);

typo3/sysext/lowlevel/Resources/Private/Language/locallang.xlf

@@ -30,6 +30,9 @@
 			<trans-unit id="routes">
 				<source>Backend Routes</source>
 			</trans-unit>
+			<trans-unit id="httpMiddlewareStacks">
+				<source>HTTP Middlewares (PSR-15)</source>
+			</trans-unit>
 			<trans-unit id="t3services">
 				<source>$GLOBALS['T3_SERVICES'] (Registered Services)</source>
 			</trans-unit>