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<?php |
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/** |
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* Spiral Framework. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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declare(strict_types=1); |
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namespace Spiral\Broadcast\Middleware; |
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use Psr\Http\Message\ResponseFactoryInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Spiral\Broadcast\Config\WebsocketsConfig; |
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use Spiral\Core\Exception\LogicException; |
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use Spiral\Core\ResolverInterface; |
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use Spiral\Core\ScopeInterface; |
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use Spiral\Http\Exception\ClientException; |
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/** |
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* Authorizes websocket connections to server and topics. |
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*/ |
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final class WebsocketsMiddleware implements MiddlewareInterface |
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{ |
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/** @var WebsocketsConfig */ |
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private $config; |
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/** @var ScopeInterface */ |
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private $scope; |
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/** @var ResolverInterface */ |
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private $resolver; |
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/** @var ResponseFactoryInterface */ |
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private $responseFactory; |
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/** |
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* @param WebsocketsConfig $config |
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* @param ScopeInterface $scope |
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* @param ResolverInterface $resolver |
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* @param ResponseFactoryInterface $responseFactory |
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*/ |
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public function __construct( |
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WebsocketsConfig $config, |
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ScopeInterface $scope, |
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ResolverInterface $resolver, |
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ResponseFactoryInterface $responseFactory |
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) { |
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$this->config = $config; |
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$this->scope = $scope; |
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$this->resolver = $resolver; |
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$this->responseFactory = $responseFactory; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param RequestHandlerInterface $handler |
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* @return ResponseInterface |
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* |
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* @throws ClientException |
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* @throws \Throwable |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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if ($request->getUri()->getPath() !== $this->config->getPath()) { |
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return $handler->handle($request); |
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} |
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// server authorization |
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if ($request->getAttribute('ws:joinServer', null) !== null) { |
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if (!$this->authorizeServer($request)) { |
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return $this->responseFactory->createResponse(403); |
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} |
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return $this->responseFactory->createResponse(200); |
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} |
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// topic authorization |
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if (is_string($request->getAttribute('ws:joinTopics', null))) { |
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$topics = explode(',', $request->getAttribute('ws:joinTopics')); |
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foreach ($topics as $topic) { |
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if (!$this->authorizeTopic($request, $topic)) { |
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return $this->responseFactory->createResponse(403); |
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} |
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} |
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return $this->responseFactory->createResponse(200); |
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} |
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return $this->responseFactory->createResponse(403); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @return bool |
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* |
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* @throws \Throwable |
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*/ |
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private function authorizeServer(ServerRequestInterface $request): bool |
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{ |
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$callback = $this->config->getServerCallback(); |
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if ($callback === null) { |
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return true; |
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} |
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return $this->invoke($request, $callback, []); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param string $topic |
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* @return bool |
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* |
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* @throws \Throwable |
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*/ |
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private function authorizeTopic(ServerRequestInterface $request, string $topic): bool |
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{ |
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$parameters = []; |
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$callback = $this->config->findTopicCallback($topic, $parameters); |
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if ($callback === null) { |
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return false; |
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} |
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return $this->invoke($request, $callback, $parameters + ['topic' => $topic]); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* @param callable $callback |
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* @param array $parameters |
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* @return bool |
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* |
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* @throws \Throwable |
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*/ |
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private function invoke(ServerRequestInterface $request, callable $callback, array $parameters = []): bool |
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{ |
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/** @var \ReflectionFunctionAbstract $reflection */ |
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$reflection = null; |
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switch (true) { |
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case $callback instanceof \Closure || is_string($callback): |
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$reflection = new \ReflectionFunction($callback); |
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break; |
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case is_array($callback) && is_object($callback[0]): |
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$reflection = (new \ReflectionObject($callback[0]))->getMethod($callback[1]); |
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break; |
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case is_array($callback): |
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$reflection = (new \ReflectionClass($callback[0]))->getMethod($callback[1]); |
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break; |
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default: |
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throw new LogicException('Unable to invoke callable function'); |
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} |
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return $this->scope->runScope( |
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[ |
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ServerRequestInterface::class => $request |
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], |
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function () use ($reflection, $parameters, $callback) { |
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return call_user_func_array( |
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$callback, |
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$this->resolver->resolveArguments($reflection, $parameters) |
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); |
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} |
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); |
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} |
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} |
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spiral /
framework
