Merge pull request #954 from nextcloud/enh/noid/iwebfinger

using IWebfingerManager

14 files changed, 486 insertions, 134 deletions

diff --git a/.gitignore b/.gitignore
index ec1c218c..205c5938 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,6 @@ js/
 node_modules/
 vendor/
 img/twemoji/
+composer/*
+!composer/composer.json
+!composer/composer.lock
diff --git a/Makefile b/Makefile
index 6622d868..c83a940f 100644
--- a/Makefile
+++ b/Makefile
@@ -64,9 +64,9 @@ clean:
 clean-dev:
 	rm -rf node_modules
 
-# composer packages
-composer:
-	composer install --prefer-dist
+build-composer:
+	composer install --prefer-dist --working-dir composer
+	composer update --prefer-dist --working-dir composer
 
 # releasing to github
 release: appstore github-release github-upload
@@ -88,7 +88,7 @@ github-upload:
 		--file $(build_dir)/$(app_name)-$(version).tar.gz
 
 # creating .tar.gz + signature
-appstore: dev-setup lint build-js-production composer
+appstore: dev-setup lint build-js-production build-composer
 	mkdir -p $(sign_dir)
 	rsync -a \
 	--exclude=/build \
@@ -101,8 +101,8 @@ appstore: dev-setup lint build-js-production composer
 	--exclude=/.babelrc.js \
 	--exclude=/.drone.yml \
 	--exclude=/.eslintrc.js \
-	--exclude=/composer.json \
-	--exclude=/composer.lock \
+	--exclude=/composer/composer.json \
+	--exclude=/composer/composer.lock \
 	--exclude=/src \
 	--exclude=/node_modules \
 	--exclude=/webpack.*.js \
diff --git a/appinfo/app.php b/appinfo/app.php
deleted file mode 100644
index 5a8c2071..00000000
--- a/appinfo/app.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-declare(strict_types=1);
-
-
-/**
- * Nextcloud - Social Support
- *
- * This file is licensed under the Affero General Public License version 3 or
- * later. See the COPYING file.
- *
- * @author Maxence Lange <maxence@artificial-owl.com>
- * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-namespace OCA\Social\AppInfo;
-
-
-require_once __DIR__ . '/autoload.php';
-
-
-/** @var Application $app */
-$app = \OC::$server->query(Application::class);
-
-$app->checkUpgradeStatus();
-
-
diff --git a/appinfo/autoload.php b/appinfo/autoload.php
deleted file mode 100644
index 3427325f..00000000
--- a/appinfo/autoload.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-declare(strict_types=1);
-
-
-/**
- * Nextcloud - Social Support
- *
- * This file is licensed under the Affero General Public License version 3 or
- * later. See the COPYING file.
- *
- * @author Maxence Lange <maxence@artificial-owl.com>
- * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * 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 Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-namespace OCA\Social\AppInfo;
-
-$composerDir = __DIR__ . '/../vendor/';
-
-if (is_dir($composerDir) && file_exists($composerDir . 'autoload.php')) {
-	require_once $composerDir . 'autoload.php';
-}
-
diff --git a/appinfo/info.xml b/appinfo/info.xml
index 70e44372..84a72e5b 100644
--- a/appinfo/info.xml
+++ b/appinfo/info.xml
@@ -35,7 +35,7 @@
 		<database>pgsql</database>
 		<database>sqlite</database>
 		<database>mysql</database>
-		<nextcloud min-version="17" max-version="19"/>
+		<nextcloud min-version="20" max-version="21"/>
 	</dependencies>
 
 	<background-jobs>
diff --git a/composer.json b/composer/composer.json
index f009f3b3..2e394046 100644
--- a/composer.json
+++ b/composer/composer.json
@@ -12,6 +12,15 @@
   "config": {
     "platform": {
       "php": "7.0.0"
+    },
+    "vendor-dir": ".",
+    "optimize-autoloader": true,
+    "classmap-authoritative": true,
+    "autoloader-suffix": "Social"
+  },
+  "autoload": {
+    "psr-4": {
+      "OCA\\Social\\": "../lib/"
     }
   },
   "require": {
diff --git a/composer.lock b/composer/composer.lock
index 758e0955..c03b7b1b 100644
--- a/composer.lock
+++ b/composer/composer.lock
@@ -1,7 +1,7 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
     "content-hash": "f93a783c86bad53b0b8486db3fc61380",
@@ -12,12 +12,12 @@
             "source": {
                 "type": "git",
                 "url": "https://github.com/daita/my-small-php-tools.git",
-                "reference": "d8778803612af20699c7efb0637bfe62478e596c"
+                "reference": "4e602526c3afbba7255ae4764037562075ef030f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/daita/my-small-php-tools/zipball/d8778803612af20699c7efb0637bfe62478e596c",
-                "reference": "d8778803612af20699c7efb0637bfe62478e596c",
+                "url": "https://api.github.com/repos/daita/my-small-php-tools/zipball/4e602526c3afbba7255ae4764037562075ef030f",
+                "reference": "4e602526c3afbba7255ae4764037562075ef030f",
                 "shasum": ""
             },
             "require": {
@@ -40,7 +40,7 @@
                 }
             ],
             "description": "My small PHP Tools",
-            "time": "2020-03-18T23:09:45+00:00"
+            "time": "2020-08-06T13:26:28+00:00"
         },
         {
             "name": "friendica/json-ld",
@@ -243,6 +243,7 @@
             ],
             "description": "This tool check syntax of PHP files about 20x faster than serial check.",
             "homepage": "https://github.com/JakubOnderka/PHP-Parallel-Lint",
+            "abandoned": "php-parallel-lint/php-parallel-lint",
             "time": "2018-02-24T15:31:20+00:00"
         },
         {
@@ -853,6 +854,7 @@
             "keywords": [
                 "tokenizer"
             ],
+            "abandoned": true,
             "time": "2017-11-27T05:48:46+00:00"
         },
         {
@@ -1560,16 +1562,16 @@
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.17.0",
+            "version": "v1.18.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
-                "reference": "e94c8b1bbe2bc77507a1056cdb06451c75b427f9"
+                "reference": "1c302646f6efc070cd46856e600e5e0684d6b454"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/e94c8b1bbe2bc77507a1056cdb06451c75b427f9",
-                "reference": "e94c8b1bbe2bc77507a1056cdb06451c75b427f9",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/1c302646f6efc070cd46856e600e5e0684d6b454",
+                "reference": "1c302646f6efc070cd46856e600e5e0684d6b454",
                 "shasum": ""
             },
             "require": {
@@ -1581,7 +1583,11 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.17-dev"
+                    "dev-master": "1.18-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
                 }
             },
             "autoload": {
@@ -1614,7 +1620,21 @@
                 "polyfill",
                 "portable"
             ],
-            "time": "2020-05-12T16:14:59+00:00"
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-07-14T12:35:20+00:00"
         },
         {
             "name": "theseer/tokenizer",
@@ -1658,23 +1678,24 @@
         },
         {
             "name": "webmozart/assert",
-            "version": "1.8.0",
+            "version": "1.9.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/webmozart/assert.git",
-                "reference": "ab2cb0b3b559010b75981b1bdce728da3ee90ad6"
+                "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/ab2cb0b3b559010b75981b1bdce728da3ee90ad6",
-                "reference": "ab2cb0b3b559010b75981b1bdce728da3ee90ad6",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/bafc69caeb4d49c39fd0779086c03a3738cbb389",
+                "reference": "bafc69caeb4d49c39fd0779086c03a3738cbb389",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.3.3 || ^7.0",
+                "php": "^5.3.3 || ^7.0 || ^8.0",
                 "symfony/polyfill-ctype": "^1.8"
             },
             "conflict": {
+                "phpstan/phpstan": "<0.12.20",
                 "vimeo/psalm": "<3.9.1"
             },
             "require-dev": {
@@ -1702,7 +1723,7 @@
                 "check",
                 "validate"
             ],
-            "time": "2020-04-18T12:12:48+00:00"
+            "time": "2020-07-08T17:02:28+00:00"
         }
     ],
     "aliases": [],
@@ -1716,5 +1737,6 @@
     "platform-dev": [],
     "platform-overrides": {
         "php": "7.0.0"
-    }
+    },
+    "plugin-api-version": "1.1.0"
 }
diff --git a/lib/AppInfo/Application.php b/lib/AppInfo/Application.php
index 18996bac..87301824 100644
--- a/lib/AppInfo/Application.php
+++ b/lib/AppInfo/Application.php
@@ -31,13 +31,20 @@ declare(strict_types=1);
 namespace OCA\Social\AppInfo;
 
 
+use Closure;
 use OC\DB\SchemaWrapper;
+use OC\WellKnown\Event\WellKnownEvent;
+use OCA\Social\Listeners\WellKnownListener;
 use OCA\Social\Notification\Notifier;
 use OCA\Social\Service\ConfigService;
 use OCA\Social\Service\UpdateService;
 use OCP\AppFramework\App;
-use OCP\AppFramework\IAppContainer;
+use OCP\AppFramework\Bootstrap\IBootContext;
+use OCP\AppFramework\Bootstrap\IBootstrap;
+use OCP\AppFramework\Bootstrap\IRegistrationContext;
 use OCP\AppFramework\QueryException;
+use OCP\IServerContainer;
+use Throwable;
 
 
 /**
@@ -45,22 +52,12 @@ use OCP\AppFramework\QueryException;
  *
  * @package OCA\Social\AppInfo
  */
-class Application extends App {
+class Application extends App implements IBootstrap {
 
 
 	const APP_NAME = 'social';
 
 
-	/** @var ConfigService */
-	private $configService;
-
-	/** @var UpdateService */
-	private $updateService;
-
-	/** @var IAppContainer */
-	private $container;
-
-
 	/**
 	 * Application constructor.
 	 *
@@ -68,41 +65,59 @@ class Application extends App {
 	 */
 	public function __construct(array $params = []) {
 		parent::__construct(self::APP_NAME, $params);
+	}
 
-		$this->container = $this->getContainer();
 
-		$manager = $this->container->getServer()
-								   ->getNotificationManager();
+	/**
+	 * @param IRegistrationContext $context
+	 */
+	public function register(IRegistrationContext $context): void {
+		// TODO: nc21, uncomment
+		// $context->registerEventListener(WellKnownEvent::class, WellKnownListener::class);
+	}
+
+
+	/**
+	 * @param IBootContext $context
+	 */
+	public function boot(IBootContext $context): void {
+		$manager = $context->getServerContainer()
+						   ->getNotificationManager();
 		$manager->registerNotifierService(Notifier::class);
+
+		try {
+			$context->injectFn(Closure::fromCallable([$this, 'checkUpgradeStatus']));
+		} catch (Throwable $e) {
+		}
 	}
 
 
 	/**
+	 * Register Navigation Tab
 	 *
+	 * @param IServerContainer $container
 	 */
-	public function checkUpgradeStatus() {
-		$upgradeChecked = $this->container->getServer()
-										  ->getConfig()
-										  ->getAppValue(Application::APP_NAME, 'update_checked', '');
+	protected function checkUpgradeStatus(IServerContainer $container) {
+		$upgradeChecked = $container->getConfig()
+									->getAppValue(Application::APP_NAME, 'update_checked', '');
 
 		if ($upgradeChecked === '0.3') {
 			return;
 		}
 
 		try {
-			$this->configService = $this->container->query(ConfigService::class);
-			$this->updateService = $this->container->query(UpdateService::class);
+			$configService = $container->query(ConfigService::class);
+			$updateService = $container->query(UpdateService::class);
 		} catch (QueryException $e) {
 			return;
 		}
 
-		$server = $this->container->getServer();
-		$schema = new SchemaWrapper($server->getDatabaseConnection());
+		$schema = new SchemaWrapper($container->getDatabaseConnection());
 		if ($schema->hasTable('social_a2_stream')) {
-			$this->updateService->checkUpdateStatus();
+			$updateService->checkUpdateStatus();
 		}
 
-		$this->configService->setAppValue('update_checked', '0.3');
+		$configService->setAppValue('update_checked', '0.3');
 	}
 
 }
diff --git a/lib/Db/StreamActionsRequest.php b/lib/Db/StreamActionsRequest.php
index 99cf906d..2bacf14b 100644
--- a/lib/Db/StreamActionsRequest.php
+++ b/lib/Db/StreamActionsRequest.php
@@ -96,9 +96,7 @@ class StreamActionsRequest extends StreamActionsRequestBuilder {
 		$this->limitToActorId($qb, $action->getActorId());
 		$this->limitToStreamId($qb, $action->getStreamId());
 
-		$count = $qb->execute();
-
-		return $count;
+		return $qb->execute();
 	}
 
 
diff --git a/lib/Listeners/WellKnownListener.php b/lib/Listeners/WellKnownListener.php
new file mode 100644
index 00000000..8eb18c64
--- /dev/null
+++ b/lib/Listeners/WellKnownListener.php
@@ -0,0 +1,83 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2020, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Listeners;
+
+
+use OC\WellKnown\Event\WellKnownEvent;
+use OCA\Social\Exceptions\CacheActorDoesNotExistException;
+use OCA\Social\Exceptions\SocialAppConfigException;
+use OCA\Social\Exceptions\UnauthorizedFediverseException;
+use OCA\Social\Service\WellKnownService;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+use OCP\WellKnown\IWellKnownManager;
+
+
+/**
+ * Class WellKnownListener
+ *
+ * @package OCA\Social\Listeners
+ */
+class WellKnownListener implements IEventListener {
+
+
+	private $wellKnownService;
+
+
+	/**
+	 * WellKnownListener constructor.
+	 *
+	 * @param WellKnownService $wellKnownService
+	 */
+	public function __construct(WellKnownService $wellKnownService) {
+		$this->wellKnownService = $wellKnownService;
+	}
+
+
+	/**
+	 * @param Event $event
+	 */
+	public function handle(Event $event): void {
+		if (!$event instanceof WellKnownEvent) {
+			return;
+		}
+
+		$wellKnown = $event->getWellKnown();
+		if ($wellKnown->getService() === IWellKnownManager::WEBFINGER) {
+			try {
+				$this->wellKnownService->webfinger($wellKnown);
+			} catch (CacheActorDoesNotExistException | SocialAppConfigException | UnauthorizedFediverseException $e) {
+			}
+		}
+	}
+
+}
+
diff --git a/lib/Model/WebfingerLink.php b/lib/Model/WebfingerLink.php
new file mode 100644
index 00000000..5e44f593
--- /dev/null
+++ b/lib/Model/WebfingerLink.php
@@ -0,0 +1,148 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OCA\Social\Model;
+
+use JsonSerializable;
+
+
+/**
+ * Class WebfingerLink
+ *
+ * @package OCA\Social\Model
+ */
+class WebfingerLink implements JsonSerializable {
+
+
+	/** @var string */
+	private $href = '';
+
+	/** @var string */
+	private $rel = '';
+
+	/** @var string */
+	private $template = '';
+
+	/** @var string */
+	private $type = '';
+
+
+	/**
+	 * @return string
+	 */
+	public function getHref(): string {
+		return $this->href;
+	}
+
+	/**
+	 * @param string $value
+	 *
+	 * @return WebfingerLink
+	 */
+	public function setHref(string $value): self {
+		$this->href = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function getType(): string {
+		return $this->type;
+	}
+
+	/**
+	 * @param string $value
+	 *
+	 * @return WebfingerLink
+	 */
+	public function setType(string $value): self {
+		$this->type = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function getRel(): string {
+		return $this->rel;
+	}
+
+	/**
+	 * @param string $value
+	 *
+	 * @return WebfingerLink
+	 */
+	public function setRel(string $value): self {
+		$this->rel = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function getTemplate(): string {
+		return $this->template;
+	}
+
+	/**
+	 * @param string $value
+	 *
+	 * @return WebfingerLink
+	 */
+	public function setTemplate(string $value): self {
+		$this->template = $value;
+
+		return $this;
+	}
+
+
+	/**
+	 * @return array
+	 */
+	public function jsonSerialize(): array {
+		$data = [
+			'rel'      => $this->getRel(),
+			'type'     => $this->getType(),
+			'template' => $this->getTemplate(),
+			'href'     => $this->getHref()
+		];
+
+		return array_filter($data);
+	}
+
+}
+
diff --git a/lib/Service/ActorService.php b/lib/Service/ActorService.php
index 429ebf88..a8fe47d1 100644
--- a/lib/Service/ActorService.php
+++ b/lib/Service/ActorService.php
@@ -36,6 +36,7 @@ use OCA\Social\Db\CacheActorsRequest;
 use OCA\Social\Db\CacheDocumentsRequest;
 use OCA\Social\Exceptions\CacheActorDoesNotExistException;
 use OCA\Social\Exceptions\CacheDocumentDoesNotExistException;
+use OCA\Social\Exceptions\ItemAlreadyExistsException;
 use OCA\Social\Exceptions\ItemUnknownException;
 use OCA\Social\Model\ActivityPub\Actor\Person;
 
@@ -92,6 +93,8 @@ class ActorService {
 
 	/**
 	 * @param Person $actor
+	 *
+	 * @throws ItemAlreadyExistsException
 	 */
 	public function cacheLocalActor(Person $actor) {
 		$actor->setLocal(true);
@@ -108,6 +111,8 @@ class ActorService {
 
 	/**
 	 * @param Person $actor
+	 *
+	 * @throws ItemAlreadyExistsException
 	 */
 	public function save(Person $actor) {
 		$this->cacheDocumentIfNeeded($actor);
@@ -119,6 +124,7 @@ class ActorService {
 	 * @param Person $actor
 	 *
 	 * @return int
+	 * @throws ItemAlreadyExistsException
 	 */
 	public function update(Person $actor): int {
 		$this->cacheDocumentIfNeeded($actor);
@@ -129,6 +135,8 @@ class ActorService {
 
 	/**
 	 * @param Person $actor
+	 *
+	 * @throws ItemAlreadyExistsException
 	 */
 	private function cacheDocumentIfNeeded(Person $actor) {
 		if ($actor->hasIcon()) {
diff --git a/lib/Service/CacheActorService.php b/lib/Service/CacheActorService.php
index f049c99a..b448a682 100644
--- a/lib/Service/CacheActorService.php
+++ b/lib/Service/CacheActorService.php
@@ -50,6 +50,7 @@ use OCA\Social\Exceptions\RetrieveAccountFormatException;
 use OCA\Social\Exceptions\SocialAppConfigException;
 use OCA\Social\Exceptions\UnauthorizedFediverseException;
 use OCA\Social\Model\ActivityPub\Actor\Person;
+use OCP\IURLGenerator;
 
 
 class CacheActorService {
@@ -58,12 +59,18 @@ class CacheActorService {
 	use TArrayTools;
 
 
+	/** @var IURLGenerator */
+	private $urlGenerator;
+
 	/** @var CacheActorsRequest */
 	private $cacheActorsRequest;
 
 	/** @var CurlService */
 	private $curlService;
 
+	/** @var FediverseService */
+	private $fediverseService;
+
 	/** @var ConfigService */
 	private $configService;
 
@@ -74,17 +81,21 @@ class CacheActorService {
 	/**
 	 * CacheService constructor.
 	 *
+	 * @param IUrlGenerator $urlGenerator
 	 * @param CacheActorsRequest $cacheActorsRequest
 	 * @param CurlService $curlService
+	 * @param FediverseService $fediverseService
 	 * @param ConfigService $configService
 	 * @param MiscService $miscService
 	 */
 	public function __construct(
-		CacheActorsRequest $cacheActorsRequest, CurlService $curlService,
-		ConfigService $configService, MiscService $miscService
+		IUrlGenerator $urlGenerator, CacheActorsRequest $cacheActorsRequest, CurlService $curlService,
+		FediverseService $fediverseService, ConfigService $configService, MiscService $miscService
 	) {
+		$this->urlGenerator = $urlGenerator;
 		$this->cacheActorsRequest = $cacheActorsRequest;
 		$this->curlService = $curlService;
+		$this->fediverseService = $fediverseService;
 		$this->configService = $configService;
 		$this->miscService = $miscService;
 	}
@@ -166,8 +177,9 @@ class CacheActorService {
 	 */
 	public function getFromLocalAccount(string $account): Person {
 		$instance = '';
+		$account = ltrim($account, '@');
 		if (strrpos($account, '@')) {
-			list($account, $instance) = explode('@', $account);
+			list($account, $instance) = explode('@', $account, 2);
 		}
 
 		if ($instance === ''
diff --git a/lib/Service/WellKnownService.php b/lib/Service/WellKnownService.php
new file mode 100644
index 00000000..2ce5342f
--- /dev/null
+++ b/lib/Service/WellKnownService.php
@@ -0,0 +1,132 @@
+<?php
+declare(strict_types=1);
+
+
+/**
+ * Nextcloud - Social Support
+ *
+ * This file is licensed under the Affero General Public License version 3 or
+ * later. See the COPYING file.
+ *
+ * @author Maxence Lange <maxence@artificial-owl.com>
+ * @copyright 2018, Maxence Lange <maxence@artificial-owl.com>
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under th