backport changes to share.php to enable the encryption app to get all users with...

diff --git a/lib/public/share.php b/lib/public/share.php
index 092f83e96db13bc99655d6d2ab60a342be72c117..dbe3c7193e4293be26607decff692f65d26f157f 100644 (file)
--- a/lib/public/share.php
+++ b/lib/public/share.php
@@ -107,6 +107,112 @@ class Share {
                return false;
        }
 
+
+       /**
+       * @brief Prepare a path to be passed to DB as file_target
+       * @return string Prepared path
+       */
+       public static function prepFileTarget( $path ) {
+
+               // Paths in DB are stored with leading slashes, so add one if necessary
+               if ( substr( $path, 0, 1 ) !== '/' ) {
+
+                       $path = '/' . $path;
+
+               }
+
+               return $path;
+
+       }
+
+       /**
+       * @brief Find which users can access a shared item
+       * @param $path to the file
+       * @param $user owner of the file
+       * @param include owner to the list of users with access to the file
+       * @return array
+       * @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) {
+
+               $path_parts = explode(DIRECTORY_SEPARATOR, trim($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'];
+
+                       // Fetch all shares of this file path from DB
+                       $query = \OC_DB::prepare(
+                               'SELECT share_with
+                               FROM
+                               `*PREFIX*share`
+                               WHERE
+                               item_source = ? AND share_type = ?'
+                       );
+
+                       $result = $query->execute(array($source, self::SHARE_TYPE_USER));
+
+                       if (\OC_DB::isError($result)) {
+                               \OC_Log::write('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+                       }
+
+                       while ($row = $result->fetchRow()) {
+                               $shares[] = $row['share_with'];
+                       }
+
+                       // We also need to take group shares into account
+
+                       $query = \OC_DB::prepare(
+                               'SELECT share_with
+                               FROM
+                               `*PREFIX*share`
+                               WHERE
+                               item_source = ? AND share_type = ?'
+                       );
+
+                       $result = $query->execute(array($source, self::SHARE_TYPE_GROUP));
+
+                       if (\OC_DB::isError($result)) {
+                               \OC_Log::write('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+                       }
+
+                       while ($row = $result->fetchRow()) {
+                               $usersInGroup = \OC_Group::usersInGroup($row['share_with']);
+                               $shares = array_merge($shares, $usersInGroup);
+                       }
+
+                       //check for public link shares
+                       $query = \OC_DB::prepare(
+                               'SELECT share_with
+                               FROM
+                               `*PREFIX*share`
+                               WHERE
+                               item_source = ? AND share_type = ?'
+                       );
+
+                       $result = $query->execute(array($source, self::SHARE_TYPE_LINK));
+
+                       if (\OC_DB::isError($result)) {
+                               \OC_Log::write('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+                       }
+
+                       if ($result->fetchRow()) {
+                               $publicShare = true;
+                       }
+               }
+               // Include owner in list of users, if requested
+               if ($includeOwner) {
+                       $shares[] = $user;
+               }
+
+               return array("users" => array_unique($shares), "public" => $publicShare);
+       }
+
        /**
        * @brief Get the items of item type shared with the current user
        * @param string Item type