ignore encryption keys for propagation

lib/private/files/cache/homepropagator.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * @author Robin Appelman <icewind@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 OC\Files\Cache;
+
+class HomePropagator extends Propagator {
+	private $ignoredBaseFolders;
+
+	/**
+	 * @param \OC\Files\Storage\Storage $storage
+	 */
+	public function __construct(\OC\Files\Storage\Storage $storage) {
+		parent::__construct($storage);
+		$this->ignoredBaseFolders = ['files_encryption'];
+	}
+
+
+	/**
+	 * @param string $internalPath
+	 * @param int $time
+	 * @param int $sizeDifference number of bytes the file has grown
+	 * @return array[] all propagated entries
+	 */
+	public function propagateChange($internalPath, $time, $sizeDifference = 0) {
+		list($baseFolder) = explode('/', $internalPath, 2);
+		if (in_array($baseFolder, $this->ignoredBaseFolders)) {
+			return [];
+		} else {
+			return parent::propagateChange($internalPath, $time, $sizeDifference);
+		}
+	}
+}

lib/private/files/storage/home.php

@@ -24,6 +24,7 @@
  */
 
 namespace OC\Files\Storage;
+use OC\Files\Cache\HomePropagator;
 
 /**
  * Specialized version of Local storage for home directory usage
@@ -76,6 +77,23 @@ class Home extends Local implements \OCP\Files\IHomeStorage {
 		return $this->cache;
 	}
 
+	/**
+	 * get a propagator instance for the cache
+	 *
+	 * @param \OC\Files\Storage\Storage (optional) the storage to pass to the watcher
+	 * @return \OC\Files\Cache\Propagator
+	 */
+	public function getPropagator($storage = null) {
+		if (!$storage) {
+			$storage = $this;
+		}
+		if (!isset($this->propagator)) {
+			$this->propagator = new HomePropagator($storage);
+		}
+		return $this->propagator;
+	}
+
+
 	/**
 	 * Returns the owner of this home storage
 	 * @return \OC\User\User owner of this home storage