1 files changed, 80 insertions, 0 deletions
diff --git a/lib/private/AppFramework/Middleware/OCSMiddleware.php b/lib/private/AppFramework/Middleware/OCSMiddleware.php
new file mode 100644
index 00000000000..2c7d1167e7c
--- /dev/null
+++ b/lib/private/AppFramework/Middleware/OCSMiddleware.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @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\AppFramework\Middleware;
+
+use OC\AppFramework\Http;
+use OCP\AppFramework\Http\OCSResponse;
+use OCP\AppFramework\OCS\OCSException;
+use OCP\AppFramework\OCSController;
+use OCP\IRequest;
+use OCP\AppFramework\Middleware;
+
+class OCSMiddleware extends Middleware {
+
+	/** @var IRequest */
+	private $request;
+
+	/**
+	 * @param IRequest $request
+	 */
+	public function __construct(IRequest $request) {
+		$this->request = $request;
+	}
+
+	/**
+	 * @param \OCP\AppFramework\Controller $controller
+	 * @param string $methodName
+	 * @param \Exception $exception
+	 * @throws \Exception
+	 * @return OCSResponse
+	 */
+	public function afterException($controller, $methodName, \Exception $exception) {
+		if ($controller instanceof OCSController && $exception instanceof OCSException) {
+			$format = $this->getFormat($controller);
+
+			$code = $exception->getCode();
+			if ($code === 0) {
+				$code = Http::STATUS_INTERNAL_SERVER_ERROR;
+			}
+			return new OCSResponse($format, $code, $exception->getMessage());
+		}
+
+		throw $exception;
+	}
+
+	/**
+	 * @param \OCP\AppFramework\Controller $controller
+	 * @return string
+	 */
+	private function getFormat($controller) {
+		// get format from the url format or request format parameter
+		$format = $this->request->getParam('format');
+
+		// if none is given try the first Accept header
+		if($format === null) {
+			$headers = $this->request->getHeader('Accept');
+			$format = $controller->getResponderByHTTPHeader($headers);
+		}
+
+		return $format;
+	}
+}