From 51a0741005bc815a547d3cbbd9317dc317f03952 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Julius=20H=C3=A4rtl?= <jus@bitgrid.net>
Date: Fri, 30 Jun 2017 11:08:04 +0200
Subject: [PATCH] Add public capabilities API
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Signed-off-by: Julius Härtl <jus@bitgrid.net>
---
 core/Controller/OCSController.php             |  9 ++++--
 lib/private/CapabilitiesManager.php           |  8 +++--
 lib/public/Capabilities/IPublicCapability.php | 32 +++++++++++++++++++
 3 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100644 lib/public/Capabilities/IPublicCapability.php

diff --git a/core/Controller/OCSController.php b/core/Controller/OCSController.php
index a709ab7b07..35eac3a3d8 100644
--- a/core/Controller/OCSController.php
+++ b/core/Controller/OCSController.php
@@ -80,7 +80,8 @@ class OCSController extends \OCP\AppFramework\OCSController {
 	}
 
 	/**
-	 * @NoAdminRequired
+	 * @PublicPage
+	 *
 	 * @return DataResponse
 	 */
 	public function getCapabilities() {
@@ -94,7 +95,11 @@ class OCSController extends \OCP\AppFramework\OCSController {
 			'edition' => '',
 		);
 
-		$result['capabilities'] = $this->capabilitiesManager->getCapabilities();
+		if($this->userSession->isLoggedIn()) {
+			$result['capabilities'] = $this->capabilitiesManager->getCapabilities();
+		} else {
+			$result['capabilities'] = $this->capabilitiesManager->getCapabilities(true);
+		}
 
 		return new DataResponse($result);
 	}
diff --git a/lib/private/CapabilitiesManager.php b/lib/private/CapabilitiesManager.php
index 159fa97c70..173760fe20 100644
--- a/lib/private/CapabilitiesManager.php
+++ b/lib/private/CapabilitiesManager.php
@@ -24,6 +24,7 @@ namespace OC;
 
 use OCP\AppFramework\QueryException;
 use OCP\Capabilities\ICapability;
+use OCP\Capabilities\IPublicCapability;
 use OCP\ILogger;
 
 class CapabilitiesManager {
@@ -41,10 +42,11 @@ class CapabilitiesManager {
 	/**
 	 * Get an array of al the capabilities that are registered at this manager
      *
+	 * @param bool $public get public capabilities only
 	 * @throws \InvalidArgumentException
 	 * @return array
 	 */
-	public function getCapabilities() {
+	public function getCapabilities($public = false) {
 		$capabilities = [];
 		foreach($this->capabilities as $capability) {
 			try {
@@ -55,7 +57,9 @@ class CapabilitiesManager {
 			}
 
 			if ($c instanceof ICapability) {
-				$capabilities = array_replace_recursive($capabilities, $c->getCapabilities());
+				if(!$public || ($public && $c instanceof IPublicCapability)) {
+					$capabilities = array_replace_recursive($capabilities, $c->getCapabilities());
+				}
 			} else {
 				throw new \InvalidArgumentException('The given Capability (' . get_class($c) . ') does not implement the ICapability interface');
 			}
diff --git a/lib/public/Capabilities/IPublicCapability.php b/lib/public/Capabilities/IPublicCapability.php
new file mode 100644
index 0000000000..ded58f1208
--- /dev/null
+++ b/lib/public/Capabilities/IPublicCapability.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @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 OCP\Capabilities;
+
+/**
+ * @inheritdoc
+ *
+ * @since 13.0.0
+ */
+interface IPublicCapability extends ICapability {}
+