1 files changed, 97 insertions, 0 deletions
diff --git a/core/Controller/OCMController.php b/core/Controller/OCMController.php
new file mode 100644
index 00000000000..de24cc75191
--- /dev/null
+++ b/core/Controller/OCMController.php
@@ -0,0 +1,97 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2023 Maxence Lange <maxence@artificial-owl.com>
+ *
+ * @author 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 OC\Core\Controller;
+
+use Exception;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\Capabilities\ICapability;
+use OCP\IConfig;
+use OCP\IRequest;
+use OCP\Server;
+use Psr\Container\ContainerExceptionInterface;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Controller about the endpoint /ocm-provider/
+ *
+ * @since 28.0.0
+ */
+class OCMController extends Controller {
+	public function __construct(
+		IRequest $request,
+		private IConfig $config,
+		private LoggerInterface $logger
+	) {
+		parent::__construct('core', $request);
+	}
+
+	/**
+	 * generate a OCMProvider with local data and send it as DataResponse.
+	 * This replaces the old PHP file ocm-provider/index.php
+	 *
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 *
+	 * @return DataResponse
+	 *
+	 * 200: OCM Provider details returned
+	 * 500: OCM not supported
+	 */
+	public function discovery(): DataResponse {
+		try {
+			$cap = Server::get(
+				$this->config->getAppValue(
+					'core',
+					'ocm_providers',
+					'\OCA\CloudFederationAPI\Capabilities'
+				)
+			);
+
+			if (!($cap instanceof ICapability)) {
+				throw new Exception('loaded class does not implements OCP\Capabilities\ICapability');
+			}
+
+			return new DataResponse(
+				$cap->getCapabilities()['ocm'] ?? ['enabled' => false],
+				Http::STATUS_OK,
+				[
+					'X-NEXTCLOUD-OCM-PROVIDERS' => true,
+					'Content-Type' => 'application/json'
+				]
+			);
+		} catch (ContainerExceptionInterface|Exception $e) {
+			$this->logger->error('issue during OCM discovery request', ['exception' => $e]);
+
+			return new DataResponse(
+				['message' => '/ocm-provider/ not supported'],
+				Http::STATUS_INTERNAL_SERVER_ERROR
+			);
+		}
+	}
+}