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+<?php
+/**
+ * @author Lukas Reschke <lukas@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program. If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCP\Security;
+use OCP\AppFramework\Http\EmptyContentSecurityPolicy;
+
+/**
+ * Used for Content Security Policy manipulations
+ *
+ * @package OCP\Security
+ * @since 9.0.0
+ */
+interface IContentSecurityPolicyManager {
+ /**
+ * Allows to inject something into the default content policy. This is for
+ * example useful when you're injecting Javascript code into a view belonging
+ * to another controller and cannot modify its Content-Security-Policy itself.
+ * Note that the adjustment is only applied to applications that use AppFramework
+ * controllers.
+ *
+ * To use this from your `app.php` use `\OC::$server->getContentSecurityPolicyManager()->addDefaultPolicy($policy)`,
+ * $policy has to be of type `\OCP\AppFramework\Http\ContentSecurityPolicy`.
+ *
+ * WARNING: Using this API incorrectly may make the instance more insecure.
+ * Do think twice before adding whitelisting resources. Please do also note
+ * that it is not possible to use the `disallowXYZ` functions.
+ *
+ * @param EmptyContentSecurityPolicy $policy
+ * @since 9.0.0
+ */
+ public function addDefaultPolicy(EmptyContentSecurityPolicy $policy);
+}