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AcsServiceServerRequestHandler.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\Lti1p3Proctoring\Service\Server\Handler;
use Nyholm\Psr7\Factory\HttplugFactory;
use Nyholm\Psr7\Response;
use OAT\Library\Lti1p3Core\Security\OAuth2\Validator\Result\RequestAccessTokenValidationResultInterface;
use OAT\Library\Lti1p3Core\Service\Server\Handler\LtiServiceServerRequestHandlerInterface;
use OAT\Library\Lti1p3Proctoring\Serializer\AcsControlResultSerializer;
use OAT\Library\Lti1p3Proctoring\Serializer\AcsControlResultSerializerInterface;
use OAT\Library\Lti1p3Proctoring\Serializer\AcsControlSerializer;
use OAT\Library\Lti1p3Proctoring\Serializer\AcsControlSerializerInterface;
use OAT\Library\Lti1p3Proctoring\Service\AcsServiceInterface;
use OAT\Library\Lti1p3Proctoring\Service\Server\Processor\AcsServiceServerControlProcessorInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
/**
* @see https://www.imsglobal.org/spec/proctoring/v1p0#h.awao2i3cnvsy
*/
class AcsServiceServerRequestHandler implements LtiServiceServerRequestHandlerInterface, AcsServiceInterface
{
/** @var AcsServiceServerControlProcessorInterface */
private $processor;
/** @var AcsControlSerializerInterface */
private $controlSerializer;
/** @var AcsControlResultSerializerInterface */
private $controlResultSerializer;
public function __construct(
AcsServiceServerControlProcessorInterface $processor,
?AcsControlSerializerInterface $controlSerializer = null,
?AcsControlResultSerializerInterface $controlResultSerializer = null,
) {
$this->processor = $processor;
$this->controlSerializer = $controlSerializer ?? new AcsControlSerializer();
$this->controlResultSerializer = $controlResultSerializer ?? new AcsControlResultSerializer();
}
public function getServiceName(): string
{
return static::NAME;
}
public function getAllowedContentType(): ?string
{
return static::CONTENT_TYPE_CONTROL;
}
public function getAllowedMethods(): array
{
return [
'POST',
];
}
public function getAllowedScopes(): array
{
return [
static::AUTHORIZATION_SCOPE_CONTROL,
];
}
public function handleValidatedServiceRequest(
RequestAccessTokenValidationResultInterface $validationResult,
ServerRequestInterface $request,
array $options = []
): ResponseInterface {
$registration = $validationResult->getRegistration();
$controlResult = $this->processor->process(
$registration,
$this->controlSerializer->deserialize($request->getBody()->__toString())
);
$responseBody = $this->controlResultSerializer->serialize($controlResult);
$responseHeaders = [
'Content-Type' => static::CONTENT_TYPE_CONTROL,
'Content-Length' => strlen($responseBody),
];
return new Response(200, $responseHeaders, $responseBody);
}
}