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<?php |
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/** |
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* This file is part of the Tarantool Client package. |
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* |
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* (c) Eugene Leonovich <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Tarantool\Client\Middleware; |
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use Tarantool\Client\Exception\RequestForbidden; |
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use Tarantool\Client\Handler\Handler; |
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use Tarantool\Client\Request\AuthenticateRequest; |
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use Tarantool\Client\Request\PingRequest; |
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use Tarantool\Client\Request\Request; |
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use Tarantool\Client\Request\SelectRequest; |
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use Tarantool\Client\Response; |
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final class FirewallMiddleware implements Middleware |
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{ |
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private $whitelist; |
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private $blacklist; |
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public function __construct(array $whitelist, array $blacklist) |
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{ |
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$this->whitelist = self::add($whitelist); |
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$this->blacklist = self::add($blacklist); |
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} |
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public static function whitelist(string ...$requestClasses) : self |
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{ |
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return new self($requestClasses, []); |
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} |
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public static function blacklist(string ...$requestClasses) : self |
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{ |
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return new self([], $requestClasses); |
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} |
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public static function readOnly() : self |
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{ |
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return self::whitelist( |
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AuthenticateRequest::class, |
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PingRequest::class, |
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SelectRequest::class |
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); |
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} |
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public function withWhitelist(string ...$requestClasses) : self |
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{ |
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$new = clone $this; |
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$new->whitelist = self::add($requestClasses, $new->whitelist); |
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return $new; |
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} |
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public function withBlacklist(string ...$requestClasses) : self |
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{ |
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$new = clone $this; |
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$new->blacklist = self::add($requestClasses, $new->blacklist); |
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return $new; |
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} |
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public function process(Request $request, Handler $handler) : Response |
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{ |
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$requestClass = \get_class($request); |
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if (isset($this->blacklist[$requestClass])) { |
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throw RequestForbidden::fromClass($requestClass); |
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} |
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if ([] !== $this->whitelist && !isset($this->whitelist[$requestClass])) { |
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throw RequestForbidden::fromClass($requestClass); |
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} |
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return $handler->handle($request); |
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} |
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private static function add(array $requestClasses, array $list = []) : array |
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{ |
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foreach ($requestClasses as $requestClass) { |
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if (!\is_subclass_of($requestClass, Request::class)) { |
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throw new \TypeError(\sprintf('Class "%s" should implement %s.', $requestClass, Request::class)); |
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} |
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$list[$requestClass] = true; |
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} |
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return $list; |
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} |
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} |
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tarantool-php /
client
