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<?php |
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/* |
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* This file is part of the FreshCentrifugoBundle. |
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* |
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* (c) Artem Henvald <[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 Fresh\CentrifugoBundle\Service\ChannelAuthenticator; |
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use Fresh\CentrifugoBundle\Service\Credentials\CredentialsGenerator; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpKernel\Exception\BadRequestHttpException; |
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/** |
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* PrivateChannelAuthenticator. |
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* |
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* @author Artem Henvald <[email protected]> |
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*/ |
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class PrivateChannelAuthenticator |
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{ |
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/** @var CredentialsGenerator */ |
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private $credentialsGenerator; |
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/** @var ChannelAuthenticatorInterface[]|iterable */ |
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private $channelAuthenticators; |
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/** |
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* @param CredentialsGenerator $credentialsGenerator |
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* @param ChannelAuthenticatorInterface[]|iterable $channelAuthenticators |
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*/ |
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public function __construct(CredentialsGenerator $credentialsGenerator, iterable $channelAuthenticators) |
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{ |
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$this->credentialsGenerator = $credentialsGenerator; |
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$this->channelAuthenticators = $channelAuthenticators; |
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} |
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/** |
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* @param Request $request |
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* |
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* @return array |
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*/ |
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public function authChannelsForClientFromRequest(Request $request): array |
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{ |
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$authData = []; |
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[$client, $channels] = $this->processRequest($request); |
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foreach ($channels as $channel) { |
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$token = $this->authChannelForClient($client, (string) $channel); |
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if (\is_string($token)) { |
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$authData[] = [ |
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'channel' => (string) $channel, |
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'token' => $token, |
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]; |
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} |
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} |
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return ['channels' => $authData]; |
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} |
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/** |
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* @param string $client |
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* @param string $channel |
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* |
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* @return string|null |
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*/ |
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private function authChannelForClient(string $client, string $channel): ?string |
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{ |
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$token = null; |
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$channelAuthenticator = $this->findAppropriateChannelAuthenticator($channel); |
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if ($channelAuthenticator instanceof ChannelAuthenticatorInterface && $channelAuthenticator->hasAccessToChannel($channel)) { |
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$token = $this->credentialsGenerator->generateJwtTokenForPrivateChannel($client, $channel); |
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} |
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return $token; |
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} |
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/** |
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* @param string $channel |
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* |
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* @return ChannelAuthenticatorInterface|null |
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*/ |
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private function findAppropriateChannelAuthenticator(string $channel): ?ChannelAuthenticatorInterface |
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{ |
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foreach ($this->channelAuthenticators as $channelAuthenticator) { |
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if ($channelAuthenticator->supports($channel)) { |
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return $channelAuthenticator; |
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} |
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} |
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return null; |
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} |
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/** |
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* @param Request $request |
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* |
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* @throws BadRequestHttpException |
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* @throws \Exception |
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* |
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* @return array |
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*/ |
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private function processRequest(Request $request): array |
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{ |
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try { |
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$content = \json_decode((string) $request->getContent(), true, 512, \JSON_THROW_ON_ERROR); |
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} catch (\JsonException $e) { |
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throw new BadRequestHttpException('Invalid JSON.'); |
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} catch (\Exception $e) { |
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throw $e; |
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} |
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$result = []; |
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if (!isset($content['client']) || !\is_string($content['client'])) { |
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throw new BadRequestHttpException('Client must be set in request.'); |
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} |
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$result[] = $content['client']; |
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if (!isset($content['channels']) || !\is_array($content['channels']) || empty($content['channels'])) { |
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throw new BadRequestHttpException('Channels must be set in request.'); |
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} |
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foreach ($content['channels'] as $channel) { |
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if (!\is_string($channel)) { |
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throw new BadRequestHttpException('Channel must be a string.'); |
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} |
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} |
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$result[] = $content['channels']; |
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return $result; |
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} |
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} |
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fre5h /
CentrifugoBundle
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.