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<?php |
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declare(strict_types=1); |
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namespace Jasny\Session; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface as RequestHandler; |
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use Psr\Http\Message\ServerRequestInterface as ServerRequest; |
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use Psr\Http\Message\ResponseInterface as Response; |
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/** |
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* Middleware to start a session. |
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* The session can be mocked by setting the 'session' attribute of the server request. |
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*/ |
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class SessionMiddleware implements MiddlewareInterface |
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{ |
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protected SessionInterface $defaultSession; |
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/** |
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* Class constructor. |
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*/ |
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public function __construct(?SessionInterface $session = null) |
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{ |
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$this->defaultSession = $session ?? new GlobalSession(); |
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} |
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/** |
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* Process an incoming server request (PSR-15). |
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* |
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* @param ServerRequest $request |
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* @param RequestHandler $handler |
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* @return Response |
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*/ |
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public function process(ServerRequest $request, RequestHandler $handler): Response |
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{ |
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return $this->run($request, \Closure::fromCallable([$handler, 'handle'])); |
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} |
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/** |
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* Get a callback that can be used as double pass middleware. |
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* |
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* @return callable(ServerRequest,Response,callable):Response |
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*/ |
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public function asDoublePass(): callable |
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{ |
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return function (ServerRequest $request, Response $response, callable $next): Response { |
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return $this->run($request, fn($request) => $next($request, $response)); |
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}; |
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} |
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/** |
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* @param ServerRequest $request |
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* @param callable $handle |
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* @return Response |
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*/ |
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protected function run(ServerRequest $request, callable $handle): Response |
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{ |
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$session = $request->getAttribute('session'); |
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if ($session !== null && !$session instanceof SessionInterface) { |
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trigger_error("'session' attribute of server request isn't a session object", E_USER_WARNING); |
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return $handle($request); |
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} |
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if ($session === null) { |
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$session = $this->defaultSession; |
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$request = $request->withAttribute('session', $session); |
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} |
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$session->start(); |
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try { |
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return $handle($request); |
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} finally { |
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$session->stop(); |
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} |
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} |
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} |
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