MAGETWO-60890: Fatal error logging in as admin user with restricted role

Author: Sergii Kovalenko

app/code/Magento/Store/Model/Config/Processor/Fallback.php

@@ -6,6 +6,7 @@
 namespace Magento\Store\Model\Config\Processor;
 
 use Magento\Framework\App\Config\Spi\PostProcessorInterface;
+use Magento\Framework\App\DeploymentConfig;
 use Magento\Framework\App\ResourceConnection;
 use Magento\Store\Api\Data\StoreInterface;
 use Magento\Store\Api\Data\WebsiteInterface;
@@ -42,15 +43,22 @@ class Fallback implements PostProcessorInterface
      * @var array
      */
     private $websiteData = [];
+
     /**
      * @var Store
      */
     private $storeResource;
+
     /**
      * @var Website
      */
     private $websiteResource;
 
+    /**
+     * @var DeploymentConfig
+     */
+    private $deploymentConfig;
+
     /**
      * Fallback constructor.
      * @param Scopes $scopes
@@ -59,21 +67,28 @@ public function __construct(
         Scopes $scopes,
         ResourceConnection $resourceConnection,
         Store $storeResource,
-        Website $websiteResource
+        Website $websiteResource,
+        DeploymentConfig $deploymentConfig
     ) {
         $this->scopes = $scopes;
         $this->resourceConnection = $resourceConnection;
         $this->storeResource = $storeResource;
         $this->websiteResource = $websiteResource;
+        $this->deploymentConfig = $deploymentConfig;
     }
 
     /**
      * @inheritdoc
      */
     public function process(array $data)
     {
-        $this->storeData = $this->storeResource->readAllStores();
-        $this->websiteData = $this->websiteResource->readAllWebsites();
+        if ($this->deploymentConfig->isDbAvailable()) {//read only from db
+            $this->storeData = $this->storeResource->readAllStores();
+            $this->websiteData = $this->websiteResource->readAllWebsites();
+        } else {
+            $this->storeData = $this->scopes->get('stores');
+            $this->websiteData = $this->scopes->get('websites');
+        }
 
         $defaultConfig = isset($data['default']) ? $data['default'] : [];
         $result = [

lib/internal/Magento/Framework/App/Config/InitialConfigSource.php

@@ -48,9 +48,6 @@ public function __construct(Reader $reader, $configType, $fileKey)
     public function get($path = '')
     {
         $data = new DataObject($this->reader->load($this->fileKey));
-        if ($path !== '' && $path !== null) {
-            $path = '/' . $path;
-        }
-        return $data->getData($this->configType . $path) ?: [];
+        return $data->getData($this->configType) ?: [];
     }
 }