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LtiServiceServer.php
103 lines (80 loc) · 3.64 KB
/
LtiServiceServer.php
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<?php
/**
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; under version 2
* of the License (non-upgradable).
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2021 (original work) Open Assessment Technologies SA;
*/
declare(strict_types=1);
namespace OAT\Library\Lti1p3Core\Service\Server;
use Nyholm\Psr7\Response;
use OAT\Library\Lti1p3Core\Security\OAuth2\Validator\RequestAccessTokenValidatorInterface;
use OAT\Library\Lti1p3Core\Service\Server\Handler\LtiServiceServerRequestHandlerInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Server\RequestHandlerInterface;
use Psr\Log\LoggerInterface;
use Psr\Log\NullLogger;
use Throwable;
class LtiServiceServer implements RequestHandlerInterface
{
/** @var RequestAccessTokenValidatorInterface */
private $validator;
/** @var LtiServiceServerRequestHandlerInterface */
private $handler;
/** @var LoggerInterface */
private $logger;
public function __construct(
RequestAccessTokenValidatorInterface $validator,
LtiServiceServerRequestHandlerInterface $handler,
?LoggerInterface $logger = null
) {
$this->validator = $validator;
$this->handler = $handler;
$this->logger = $logger ?? new NullLogger();
}
public function handle(ServerRequestInterface $request): ResponseInterface
{
$allowedMethods = array_map('strtolower', $this->handler->getAllowedMethods());
if (!empty($allowedMethods) && !in_array(strtolower($request->getMethod()), $allowedMethods)) {
$message = sprintf('Not acceptable request method, accepts: [%s]', implode(', ', $allowedMethods));
$this->logger->error($message);
return new Response(405, [], $message);
}
$allowedContentType = $this->handler->getAllowedContentType();
$contentTypeHeader = 'get' === strtolower($request->getMethod()) ? 'Accept' : 'Content-Type';
if (!empty($allowedContentType) && false === strpos($request->getHeaderLine($contentTypeHeader), $allowedContentType)) {
$message = sprintf('Not acceptable request content type, accepts: %s', $allowedContentType);
$this->logger->error($message);
return new Response(406, [], $message);
}
$validationResult = $this->validator->validate($request, $this->handler->getAllowedScopes());
if ($validationResult->hasError()) {
$this->logger->error($validationResult->getError());
return new Response(401, [], $validationResult->getError());
}
try {
$response = $this->handler->handleValidatedServiceRequest($validationResult, $request);
$this->logger->info(sprintf('%s service success', $this->handler->getServiceName()));
return $response;
} catch (Throwable $exception) {
$this->logger->error($exception->getMessage());
return new Response(
500,
[],
sprintf('Internal %s service error', $this->handler->getServiceName())
);
}
}
}