1 files changed, 106 insertions, 0 deletions
diff --git a/apps/files_sharing/lib/updater.php b/apps/files_sharing/lib/updater.php
new file mode 100644
index 00000000000..a43ab2e2a0a
--- /dev/null
+++ b/apps/files_sharing/lib/updater.php
@@ -0,0 +1,106 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Michael Gapczynski
+ * @copyright 2013 Michael Gapczynski mtgap@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Files\Cache;
+
+class Shared_Updater {
+
+	/**
+	* Correct the parent folders' ETags for all users shared the file at $target
+	*
+	* @param string $target
+	*/
+	static public function correctFolders($target) {
+		$uid = \OCP\User::getUser();
+		$uidOwner = \OC\Files\Filesystem::getOwner($target);
+		$info = \OC\Files\Filesystem::getFileInfo($target);
+		// Correct Shared folders of other users shared with
+		$users = \OCP\Share::getUsersItemShared('file', $info['fileid'], $uidOwner, true);
+		if (!empty($users)) {
+			while (!empty($users)) {
+				$reshareUsers = array();
+				foreach ($users as $user) {
+					if ( $user !== $uidOwner ) {
+						$etag = \OC\Files\Filesystem::getETag('');
+						\OCP\Config::setUserValue($user, 'files_sharing', 'etag', $etag);
+						// Look for reshares
+						$reshareUsers = array_merge($reshareUsers, \OCP\Share::getUsersItemShared('file', $info['fileid'], $user, true));
+					}
+				}
+				$users = $reshareUsers;
+			}
+			// Correct folders of shared file owner
+			$target = substr($target, 8);
+			if ($uidOwner !== $uid && $source = \OC_Share_Backend_File::getSource($target)) {
+				\OC\Files\Filesystem::initMountPoints($uidOwner);
+				$source = '/'.$uidOwner.'/'.$source['path'];
+				\OC\Files\Cache\Updater::correctFolder($source, $info['mtime']);
+			}
+		}
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function writeHook($params) {
+		self::correctFolders($params['path']);
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function renameHook($params) {
+		self::correctFolders($params['newpath']);
+		self::correctFolders(pathinfo($params['oldpath'], PATHINFO_DIRNAME));
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function deleteHook($params) {
+		self::correctFolders($params['path']);
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function shareHook($params) {
+		if ($params['itemType'] === 'file' || $params['itemType'] === 'folder') {
+			$uidOwner = \OCP\User::getUser();
+			$users = \OCP\Share::getUsersItemShared($params['itemType'], $params['fileSource'], $uidOwner, true);
+			if (!empty($users)) {
+				while (!empty($users)) {
+					$reshareUsers = array();
+					foreach ($users as $user) {
+						if ($user !== $uidOwner) {
+							$etag = \OC\Files\Filesystem::getETag('');
+							\OCP\Config::setUserValue($user, 'files_sharing', 'etag', $etag);
+							// Look for reshares
+							$reshareUsers = array_merge($reshareUsers, \OCP\Share::getUsersItemShared('file', $params['fileSource'], $user, true));
+						}
+					}
+					$users = $reshareUsers;
+				}
+			}
+		}
+	}
+
+}