114 lines
3.7 KiB
PHP
114 lines
3.7 KiB
PHP
<?php
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namespace Shaarli\Front;
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use Shaarli\Container\ShaarliContainer;
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use Shaarli\Front\Exception\UnauthorizedException;
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use Slim\Http\Request;
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use Slim\Http\Response;
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/**
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* Class ShaarliMiddleware
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*
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* This will be called before accessing any Shaarli controller.
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*/
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class ShaarliMiddleware
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{
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/** @var ShaarliContainer contains all Shaarli DI */
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protected $container;
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public function __construct(ShaarliContainer $container)
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{
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$this->container = $container;
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}
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/**
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* Middleware execution:
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* - run updates
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* - if not logged in open shaarli, redirect to login
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* - execute the controller
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* - return the response
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*
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* In case of error, the error template will be displayed with the exception message.
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*
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* @param Request $request Slim request
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* @param Response $response Slim response
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* @param callable $next Next action
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*
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* @return Response response.
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*/
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public function __invoke(Request $request, Response $response, callable $next): Response
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{
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$this->initBasePath($request);
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try {
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if (!is_file($this->container->conf->getConfigFileExt())
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&& !in_array($next->getName(), ['displayInstall', 'saveInstall'], true)
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) {
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return $response->withRedirect($this->container->basePath . '/install');
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}
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$this->runUpdates();
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$this->checkOpenShaarli($request, $response, $next);
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return $next($request, $response);
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} catch (UnauthorizedException $e) {
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$returnUrl = urlencode($this->container->environment['REQUEST_URI']);
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return $response->withRedirect($this->container->basePath . '/login?returnurl=' . $returnUrl);
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}
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// Other exceptions are handled by ErrorController
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}
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/**
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* Run the updater for every requests processed while logged in.
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*/
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protected function runUpdates(): void
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{
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if ($this->container->loginManager->isLoggedIn() !== true) {
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return;
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}
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$this->container->updater->setBasePath($this->container->basePath);
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$newUpdates = $this->container->updater->update();
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if (!empty($newUpdates)) {
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$this->container->updater->writeUpdates(
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$this->container->conf->get('resource.updates'),
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$this->container->updater->getDoneUpdates()
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);
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$this->container->pageCacheManager->invalidateCaches();
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}
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}
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/**
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* Access is denied to most pages with `hide_public_links` + `force_login` settings.
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*/
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protected function checkOpenShaarli(Request $request, Response $response, callable $next): bool
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{
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if (// if the user isn't logged in
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!$this->container->loginManager->isLoggedIn()
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// and Shaarli doesn't have public content...
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&& $this->container->conf->get('privacy.hide_public_links')
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// and is configured to enforce the login
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&& $this->container->conf->get('privacy.force_login')
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// and the current page isn't already the login page
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// and the user is not requesting a feed (which would lead to a different content-type as expected)
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&& !in_array($next->getName(), ['login', 'atom', 'rss'], true)
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) {
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throw new UnauthorizedException();
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}
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return true;
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}
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/**
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* Initialize the URL base path if it hasn't been defined yet.
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*/
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protected function initBasePath(Request $request): void
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{
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if (null === $this->container->basePath) {
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$this->container->basePath = rtrim($request->getUri()->getBasePath(), '/');
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}
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}
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}
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