The start of something beautiful

vendor/symfony/security-http/Authentication/AuthenticationUtils.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Security\Http\Authentication;
+
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\Security\Core\Exception\AuthenticationException;
+use Symfony\Component\Security\Http\SecurityRequestAttributes;
+
+/**
+ * Extracts Security Errors from Request.
+ *
+ * @author Boris Vujicic <boris.vujicic@gmail.com>
+ */
+class AuthenticationUtils
+{
+    private RequestStack $requestStack;
+
+    public function __construct(RequestStack $requestStack)
+    {
+        $this->requestStack = $requestStack;
+    }
+
+    public function getLastAuthenticationError(bool $clearSession = true): ?AuthenticationException
+    {
+        $request = $this->getRequest();
+        $authenticationException = null;
+
+        if ($request->attributes->has(SecurityRequestAttributes::AUTHENTICATION_ERROR)) {
+            $authenticationException = $request->attributes->get(SecurityRequestAttributes::AUTHENTICATION_ERROR);
+        } elseif ($request->hasSession() && ($session = $request->getSession())->has(SecurityRequestAttributes::AUTHENTICATION_ERROR)) {
+            $authenticationException = $session->get(SecurityRequestAttributes::AUTHENTICATION_ERROR);
+
+            if ($clearSession) {
+                $session->remove(SecurityRequestAttributes::AUTHENTICATION_ERROR);
+            }
+        }
+
+        return $authenticationException;
+    }
+
+    public function getLastUsername(): string
+    {
+        $request = $this->getRequest();
+
+        if ($request->attributes->has(SecurityRequestAttributes::LAST_USERNAME)) {
+            return $request->attributes->get(SecurityRequestAttributes::LAST_USERNAME) ?? '';
+        }
+
+        return $request->hasSession() ? ($request->getSession()->get(SecurityRequestAttributes::LAST_USERNAME) ?? '') : '';
+    }
+
+    /**
+     * @throws \LogicException
+     */
+    private function getRequest(): Request
+    {
+        $request = $this->requestStack->getCurrentRequest();
+
+        if (null === $request) {
+            throw new \LogicException('Request should exist so it can be processed for error.');
+        }
+
+        return $request;
+    }
+}