Passed
Pull Request — master (#9)
by Pavel
11:27
created

SecurityListener::onKernelController()   C

Complexity

Conditions 7
Paths 6

Size

Total Lines 25
Code Lines 13

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 10
CRAP Score 8.1426

Importance

Changes 0
Metric Value
dl 0
loc 25
c 0
b 0
f 0
ccs 10
cts 14
cp 0.7143
rs 6.7272
cc 7
eloc 13
nc 6
nop 1
crap 8.1426
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<?php
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/*
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 * Copyright (c) 2010-2017 Fabien Potencier
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is furnished
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 * to do so, subject to t * *he following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in all
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 * copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 *
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 */
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namespace Bankiru\Api\Rpc\Listener;
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use Bankiru\Api\Rpc\Event\FilterControllerEvent;
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use Bankiru\Api\Rpc\Http\RequestInterface;
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use Bankiru\Api\Rpc\RpcEvents;
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use Bankiru\Api\Rpc\RpcRequestInterface;
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use Sensio\Bundle\FrameworkExtraBundle\Security\ExpressionLanguage;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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use Symfony\Component\Security\Core\Authentication\AuthenticationTrustResolverInterface;
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use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
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use Symfony\Component\Security\Core\Authorization\AuthorizationCheckerInterface;
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use Symfony\Component\Security\Core\Exception\AccessDeniedException;
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use Symfony\Component\Security\Core\Role\RoleHierarchyInterface;
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use Symfony\Component\Security\Core\Role\RoleInterface;
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/**
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 * SecurityListener handles security restrictions on controllers.
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 *
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 * @author Fabien Potencier <[email protected]>
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 */
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final class SecurityListener implements EventSubscriberInterface
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{
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    private $tokenStorage;
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    private $authChecker;
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    private $language;
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    private $trustResolver;
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    private $roleHierarchy;
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    public function __construct(
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        TokenStorageInterface $tokenStorage,
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        AuthorizationCheckerInterface $authChecker,
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        ExpressionLanguage $language = null,
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        AuthenticationTrustResolverInterface $trustResolver = null,
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        RoleHierarchyInterface $roleHierarchy = null
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    ) {
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        $this->tokenStorage  = $tokenStorage;
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        $this->authChecker   = $authChecker;
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        $this->language      = $language;
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        $this->trustResolver = $trustResolver;
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        $this->roleHierarchy = $roleHierarchy;
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    }
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    public function onKernelController(FilterControllerEvent $event)
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    {
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        $request = $event->getRequest();
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        if (!$configuration = $request->getAttributes()->get('_security')) {
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            return;
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        }
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        if (null === $this->tokenStorage || null === $this->trustResolver) {
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            throw new \LogicException('To use the @Security tag, you need to install the Symfony Security bundle.');
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        }
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        if (null === $this->tokenStorage->getToken()) {
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            throw new \LogicException('To use the @Security tag, your controller needs to be behind a firewall.');
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        }
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        if (null === $this->language) {
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            throw new \LogicException(
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                'To use the @Security tag, you need to use the Security component 2.4 or newer and install the ExpressionLanguage component.'
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            );
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        }
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        if (!$this->language->evaluate($configuration->getExpression(), $this->getVariables($request))) {
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            throw new AccessDeniedException(sprintf('Expression "%s" denied access.', $configuration->getExpression()));
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        }
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    }
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    // code should be sync with Symfony\Component\Security\Core\Authorization\Voter\ExpressionVoter
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    public static function getSubscribedEvents()
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    {
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        return [RpcEvents::CONTROLLER => ['onKernelController', -255]];
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    }
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    private function getVariables(RpcRequestInterface $request)
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    {
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        $token = $this->tokenStorage->getToken();
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        if (null !== $this->roleHierarchy) {
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            $roles = $this->roleHierarchy->getReachableRoles($token->getRoles());
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        } else {
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            $roles = $token->getRoles();
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        }
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        $variables = [
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            'token'          => $token,
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            'user'           => $token->getUser(),
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            'object'         => $request,
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            'request'        => $request,
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            'roles'          => array_map(
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                function (RoleInterface $role) {
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                    return $role->getRole();
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                },
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                $roles
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            ),
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            'trust_resolver' => $this->trustResolver,
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            // needed for the is_granted expression function
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            'auth_checker'   => $this->authChecker,
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        ];
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        // controller variables should also be accessible
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        return array_merge($request->getAttributes()->all(), $variables);
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    }
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}
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