From b44192f3668ae2e8e9685479fa62a78cfc5500ba Mon Sep 17 00:00:00 2001
From: =?utf8?q?Bj=C3=B6rn=20Schie=C3=9Fle?= <schiessle@owncloud.com>
Date: Wed, 29 May 2013 13:10:26 +0200
Subject: [PATCH] check list of users with access to the file from the bottom
 to the top. This way we avoid calling getFileInfo() on every dir, which
 creates a lot of overhead, especially for external storages

---
 apps/files_encryption/lib/util.php |  4 ++--
 lib/public/share.php               | 20 +++++++++++++-------
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/apps/files_encryption/lib/util.php b/apps/files_encryption/lib/util.php
index 2452f4c6ae3..0ff76e60580 100644
--- a/apps/files_encryption/lib/util.php
+++ b/apps/files_encryption/lib/util.php
@@ -1028,7 +1028,7 @@ class Util {
 		if ($sharingEnabled) {
 
 			// Find out who, if anyone, is sharing the file
-			$result = \OCP\Share::getUsersSharingFile($ownerPath, $owner, true, true, true);
+			$result = \OCP\Share::getUsersSharingFile($ownerPath, $owner, true);
 			$userIds = $result['users'];
 			if ($result['public']) {
 				$userIds[] = $this->publicShareKeyId;
@@ -1457,7 +1457,7 @@ class Util {
 
 		// Find out who, if anyone, is sharing the file
 		if ($sharingEnabled) {
-			$result = \OCP\Share::getUsersSharingFile($file, $this->userId, true, true, true);
+			$result = \OCP\Share::getUsersSharingFile($file, $this->userId, true);
 			$userIds = $result['users'];
 			$userIds[] = $this->recoveryKeyId;
 			if ($result['public']) {
diff --git a/lib/public/share.php b/lib/public/share.php
index 03d662676c6..58e6131af58 100644
--- a/lib/public/share.php
+++ b/lib/public/share.php
@@ -133,17 +133,16 @@ class Share {
 	* @note $path needs to be relative to user data dir, e.g. 'file.txt' 
 	*       not '/admin/data/file.txt'
 	*/
-	public static function getUsersSharingFile($path, $user, $includeOwner = false, $removeDuplicates = true) {
+	public static function getUsersSharingFile($path, $user, $includeOwner = false) {
 
-		$path_parts = explode(DIRECTORY_SEPARATOR, trim($path, DIRECTORY_SEPARATOR));
-		$path = '';
 		$shares = array();
 		$publicShare = false;
 		$view = new \OC\Files\View('/' . $user . '/files/');
-		foreach ($path_parts as $p) {
-			$path .= '/' . $p;
-			$meta = $view->getFileInfo(\OC_Filesystem::normalizePath($path));
-			$source = $meta['fileid'];
+		$meta = $view->getFileInfo(\OC_Filesystem::normalizePath($path));
+		$source = $meta['fileid'];
+		$cache = new \OC\Files\Cache\Cache($meta['storage']);
+		
+		while ($path !== 'files') {
 
 			// Fetch all shares of this file path from DB
 			$query = \OC_DB::prepare(
@@ -203,6 +202,13 @@ class Share {
 			if ($result->fetchRow()) {
 				$publicShare = true;
 			}
+
+			// let's get the parent for the next round
+			$meta = $cache->get((int)$source);
+			$parent = $meta['parent'];
+			$parentMeta = $cache->get((int)$parent);
+			$path = $parentMeta['path'];
+			$source = $parent;
 		}
 		// Include owner in list of users, if requested
 		if ($includeOwner) {
-- 
2.39.5