login consent app sql

vendor/symfony/security-csrf/CsrfTokenManager.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\Csrf;
+
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\Security\Core\Exception\InvalidArgumentException;
+use Symfony\Component\Security\Csrf\TokenGenerator\TokenGeneratorInterface;
+use Symfony\Component\Security\Csrf\TokenGenerator\UriSafeTokenGenerator;
+use Symfony\Component\Security\Csrf\TokenStorage\NativeSessionTokenStorage;
+use Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface;
+
+/**
+ * Default implementation of {@link CsrfTokenManagerInterface}.
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class CsrfTokenManager implements CsrfTokenManagerInterface
+{
+    private $generator;
+    private $storage;
+    private $namespace;
+
+    /**
+     * @param string|RequestStack|callable|null $namespace
+     *                                                     * null: generates a namespace using $_SERVER['HTTPS']
+     *                                                     * string: uses the given string
+     *                                                     * RequestStack: generates a namespace using the current main request
+     *                                                     * callable: uses the result of this callable (must return a string)
+     */
+    public function __construct(TokenGeneratorInterface $generator = null, TokenStorageInterface $storage = null, $namespace = null)
+    {
+        $this->generator = $generator ?? new UriSafeTokenGenerator();
+        $this->storage = $storage ?? new NativeSessionTokenStorage();
+
+        $superGlobalNamespaceGenerator = function () {
+            return !empty($_SERVER['HTTPS']) && 'off' !== strtolower($_SERVER['HTTPS']) ? 'https-' : '';
+        };
+
+        if (null === $namespace) {
+            $this->namespace = $superGlobalNamespaceGenerator;
+        } elseif ($namespace instanceof RequestStack) {
+            $this->namespace = function () use ($namespace, $superGlobalNamespaceGenerator) {
+                if ($request = $namespace->getMainRequest()) {
+                    return $request->isSecure() ? 'https-' : '';
+                }
+
+                return $superGlobalNamespaceGenerator();
+            };
+        } elseif (\is_callable($namespace) || \is_string($namespace)) {
+            $this->namespace = $namespace;
+        } else {
+            throw new InvalidArgumentException(sprintf('$namespace must be a string, a callable returning a string, null or an instance of "RequestStack". "%s" given.', get_debug_type($namespace)));
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getToken(string $tokenId)
+    {
+        $namespacedId = $this->getNamespace().$tokenId;
+        if ($this->storage->hasToken($namespacedId)) {
+            $value = $this->storage->getToken($namespacedId);
+        } else {
+            $value = $this->generator->generateToken();
+
+            $this->storage->setToken($namespacedId, $value);
+        }
+
+        return new CsrfToken($tokenId, $this->randomize($value));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function refreshToken(string $tokenId)
+    {
+        $namespacedId = $this->getNamespace().$tokenId;
+        $value = $this->generator->generateToken();
+
+        $this->storage->setToken($namespacedId, $value);
+
+        return new CsrfToken($tokenId, $this->randomize($value));
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeToken(string $tokenId)
+    {
+        return $this->storage->removeToken($this->getNamespace().$tokenId);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isTokenValid(CsrfToken $token)
+    {
+        $namespacedId = $this->getNamespace().$token->getId();
+        if (!$this->storage->hasToken($namespacedId)) {
+            return false;
+        }
+
+        return hash_equals($this->storage->getToken($namespacedId), $this->derandomize($token->getValue()));
+    }
+
+    private function getNamespace(): string
+    {
+        return \is_callable($ns = $this->namespace) ? $ns() : $ns;
+    }
+
+    private function randomize(string $value): string
+    {
+        $key = random_bytes(32);
+        $value = $this->xor($value, $key);
+
+        return sprintf('%s.%s.%s', substr(md5($key), 0, 1 + (\ord($key[0]) % 32)), rtrim(strtr(base64_encode($key), '+/', '-_'), '='), rtrim(strtr(base64_encode($value), '+/', '-_'), '='));
+    }
+
+    private function derandomize(string $value): string
+    {
+        $parts = explode('.', $value);
+        if (3 !== \count($parts)) {
+            return $value;
+        }
+        $key = base64_decode(strtr($parts[1], '-_', '+/'));
+        $value = base64_decode(strtr($parts[2], '-_', '+/'));
+
+        return $this->xor($value, $key);
+    }
+
+    private function xor(string $value, string $key): string
+    {
+        if (\strlen($value) > \strlen($key)) {
+            $key = str_repeat($key, ceil(\strlen($value) / \strlen($key)));
+        }
+
+        return $value ^ $key;
+    }
+}