<?php
/*
* This file is part of the API Platform project.
*
* (c) Kévin Dunglas <dunglas@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
declare(strict_types=1);
namespace ApiPlatform\Symfony\Security;
use Symfony\Component\ExpressionLanguage\ExpressionLanguage;
use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
use Symfony\Component\Security\Core\Authentication\Token\NullToken;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
use Symfony\Component\Security\Core\Role\Role;
use Symfony\Component\Security\Core\Role\RoleHierarchyInterface;
/**
* Checks if the logged user has sufficient permissions to access the given resource.
*
* @author Kévin Dunglas <dunglas@gmail.com>
*/
final class ResourceAccessChecker implements ResourceAccessCheckerInterface
{
private $expressionLanguage;
private $authenticationTrustResolver;
private $roleHierarchy;
private $tokenStorage;
private $authorizationChecker;
private $exceptionOnNoToken;
public function __construct(ExpressionLanguage $expressionLanguage = null, AuthenticationTrustResolverInterface $authenticationTrustResolver = null, RoleHierarchyInterface $roleHierarchy = null, TokenStorageInterface $tokenStorage = null, AuthorizationCheckerInterface $authorizationChecker = null, bool $exceptionOnNoToken = true)
{
$this->expressionLanguage = $expressionLanguage;
$this->authenticationTrustResolver = $authenticationTrustResolver;
$this->roleHierarchy = $roleHierarchy;
$this->tokenStorage = $tokenStorage;
$this->authorizationChecker = $authorizationChecker;
if (5 < \func_num_args()) {
$this->exceptionOnNoToken = $exceptionOnNoToken;
trigger_deprecation('api-platform/core', '2.7', 'The $exceptionOnNoToken parameter in "%s()" is deprecated and will always be false in 3.0, you should stop using it.', __METHOD__);
}
}
public function isGranted(string $resourceClass, string $expression, array $extraVariables = []): bool
{
if (null === $this->tokenStorage || null === $this->authenticationTrustResolver) {
throw new \LogicException('The "symfony/security" library must be installed to use the "security" attribute.');
}
if (null === $token = $this->tokenStorage->getToken()) {
if ($this->exceptionOnNoToken) {
throw new \LogicException('The current token must be set to use the "security" attribute (is the URL behind a firewall?).');
}
if (class_exists(NullToken::class)) {
$token = new NullToken();
}
}
if (null === $this->expressionLanguage) {
throw new \LogicException('The "symfony/expression-language" library must be installed to use the "security" attribute.');
}
$variables = array_merge($extraVariables, [
'trust_resolver' => $this->authenticationTrustResolver,
'auth_checker' => $this->authorizationChecker, // needed for the is_granted expression function
]);
if ($token) {
$variables = array_merge($variables, $this->getVariables($token));
}
return (bool) $this->expressionLanguage->evaluate($expression, $variables);
}
/**
* @copyright Fabien Potencier <fabien@symfony.com>
*
* @see https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Security/Core/Authorization/Voter/ExpressionVoter.php
*/
private function getVariables(TokenInterface $token): array
{
return [
'token' => $token,
'user' => $token->getUser(),
'roles' => $this->getEffectiveRoles($token),
];
}
/**
* @return string[]
*/
private function getEffectiveRoles(TokenInterface $token): array
{
if (null === $this->roleHierarchy) {
return method_exists($token, 'getRoleNames') ? $token->getRoleNames() : array_map('strval', $token->getRoles()); // @phpstan-ignore-line
}
if (method_exists($this->roleHierarchy, 'getReachableRoleNames')) {
return $this->roleHierarchy->getReachableRoleNames($token->getRoleNames());
}
return array_map(static function (Role $role): string {
return $role->getRole(); // @phpstan-ignore-line
}, $this->roleHierarchy->getReachableRoles($token->getRoles())); // @phpstan-ignore-line
}
}
class_alias(ResourceAccessChecker::class, \ApiPlatform\Core\Security\ResourceAccessChecker::class);