Make wellknow work with new infra

Signed-off-by: Carl Schwan <carl@carlschwan.eu>

lib/AppInfo/Application.php

@@ -37,11 +37,13 @@
 use OCA\Social\Search\UnifiedSearchProvider;
 use OCA\Social\Service\ConfigService;
 use OCA\Social\Service\UpdateService;
+use OCA\Social\WellKnown\WebfingerHandler;
 use OCP\AppFramework\App;
 use OCP\AppFramework\Bootstrap\IBootContext;
 use OCP\AppFramework\Bootstrap\IBootstrap;
 use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\QueryException;
+use OCP\IDBConnection;
 use OCP\IServerContainer;
 use Throwable;
 
@@ -53,16 +55,8 @@
  * @package OCA\Social\AppInfo
  */
 class Application extends App implements IBootstrap {
-
-
 	const APP_NAME = 'social';
 
-
-	/**
-	 * Application constructor.
-	 *
-	 * @param array $params
-	 */
 	public function __construct(array $params = []) {
 		parent::__construct(self::APP_NAME, $params);
 	}
@@ -73,9 +67,7 @@ public function __construct(array $params = []) {
 	 */
 	public function register(IRegistrationContext $context): void {
 		$context->registerSearchProvider(UnifiedSearchProvider::class);
-
-		// TODO: nc21, uncomment
-		// $context->registerEventListener(WellKnownEvent::class, WellKnownListener::class);
+		$context->registerWellKnownHandler(WebfingerHandler::class);
 	}
 
 
@@ -114,7 +106,7 @@ protected function checkUpgradeStatus(IServerContainer $container) {
 			return;
 		}
 
-		$schema = new SchemaWrapper($container->getDatabaseConnection());
+		$schema = new SchemaWrapper($container->get(IDBConnection::class));
 		if ($schema->hasTable('social_a2_stream')) {
 			$updateService->checkUpdateStatus();
 		}

lib/Db/CoreRequestBuilder.php

@@ -112,7 +112,7 @@ public function __construct(
 	) {
 		$this->dbConnection = $connection;
 		$this->logger = $logger;
-		$this->loggerInterface = $loggerInterface;
+		$this->loggerInterface = $logger;
 		$this->urlGenerator = $urlGenerator;
 		$this->configService = $configService;
 		$this->miscService = $miscService;

lib/WellKnown/WebfingerHandler.php

@@ -0,0 +1,77 @@
+<?php
+
+namespace OCA\Social\WellKnown;
+
+use OCA\Social\Db\CacheActorsRequest;
+use OCA\Social\Exceptions\CacheActorDoesNotExistException;
+use OCA\Social\Service\CacheActorService;
+use OCA\Social\Service\ConfigService;
+use OCA\Social\Service\FediverseService;
+use OCP\Http\WellKnown\IHandler;
+use OCP\Http\WellKnown\IRequestContext;
+use OCP\Http\WellKnown\IResponse;
+use OCP\Http\WellKnown\JrdResponse;
+use OCP\IURLGenerator;
+
+class WebfingerHandler implements IHandler {
+	private IURLGenerator $urlGenerator;
+	private CacheActorsRequest $cacheActorsRequest;
+	private CacheActorService $cacheActorService;
+	private FediverseService $fediverseService;
+	private ConfigService $configService;
+
+	public function __construct(
+		IURLGenerator $urlGenerator, CacheActorsRequest $cacheActorsRequest,
+		CacheActorService $cacheActorService, FediverseService $fediverseService,
+		ConfigService $configService
+	) {
+
+		$this->urlGenerator = $urlGenerator;
+		$this->cacheActorsRequest = $cacheActorsRequest;
+		$this->cacheActorService = $cacheActorService;
+		$this->fediverseService = $fediverseService;
+		$this->configService = $configService;
+	}
+
+	public function handle(string $service, IRequestContext $context, ?IResponse $previousResponse): ?IResponse {
+		// See https://docs.joinmastodon.org/spec/webfinger/
+
+		$this->fediverseService->jailed();
+		$subject = $context->getHttpRequest()->getParam('resource');
+
+		if (strpos($subject, 'acct:') === 0) {
+			$subject = substr($subject, 5);
+		}
+
+		try {
+			$actor = $this->cacheActorService->getFromLocalAccount($subject);
+		} catch (CacheActorDoesNotExistException $e) {
+			$actor = $this->cacheActorsRequest->getFromId($subject);
+			if (!$actor->isLocal()) {
+				throw new CacheActorDoesNotExistException();
+			}
+		}
+
+		$response = new JrdResponse($subject);
+
+		// ActivityPub profile
+		$href = $this->configService->getSocialUrl() . '@' . $actor->getPreferredUsername();
+		$href = rtrim($href, '/');
+		$response->addAlias($href);
+		$response->addLink('self', 'application/activity+json', $href);
+
+		// Nextcloud profile page
+		$profilePageUrl =  $this->urlGenerator->linkToRouteAbsolute('core.ProfilePage.index', [
+			'targetUserId' => $actor->getPreferredUsername()
+		]);
+		$response->addAlias($profilePageUrl);
+		$response->addLink('http://webfinger.net/rel/profile-page', 'text/html', $profilePageUrl);
+
+		// Ostatus subscribe url
+		// JrdResponse doesn't support template
+		// $subscribe = $this->urlGenerator->linkToRouteAbsolute('social.OStatus.subscribe') . '?uri={uri}';
+		// $response->addLink('http://ostatus.org/schema/1.0/subscribe', $subscribe);
+
+		return $response;
+	}
+}