private static VivendiResource?TryGetResourceInternal(HttpContext context, Uri uri, out VivendiCollection parentCollection, out string name, out bool isCollection) { // ensure authentication if (!context.User.Identity.IsAuthenticated) { throw new UnauthorizedAccessException(); } var userName = context.User.Identity.Name; if (string.IsNullOrEmpty(userName)) { throw new UnauthorizedAccessException(); } // ensure the URI refers to the same store var localPath = uri.LocalPath; var prefix = context.Request.ApplicationPath; if (!localPath.StartsWith(prefix, Vivendi.PathComparison) || (localPath = localPath.Substring(prefix.Length)).Length > 0 && localPath[0] != '/') { throw WebDAVException.RequestDifferentStore(uri); } // check for empty segments before splitting if (localPath.Contains("//")) { throw WebDAVException.RequestInvalidPath(uri); } var segments = localPath.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries); // super users specify the real user in the first segment if (ConfigurationManager.AppSettings.GetValues("SuperUser")?.Any(su => string.Equals(userName, su, StringComparison.OrdinalIgnoreCase)) ?? false) { if (segments.Length == 0) { // the Windows Redirector does not like it if there is no root parentCollection = VivendiCollection.CreateStaticRoot(); } else { parentCollection = GetRoot(context, segments[0], true); } } else { // strip away the domain part if there is one var domainSep = userName.IndexOf('\\'); parentCollection = GetRoot(context, domainSep > -1 ? userName.Substring(domainSep + 1) : userName, false); } // traverse all parts starting at the root name = string.Empty; isCollection = localPath.Length > 0 && localPath[localPath.Length - 1] == '/'; var result = parentCollection as VivendiResource; foreach (var segment in segments) { // ensure that the parent is a collection and get the next child parentCollection = result as VivendiCollection ?? throw WebDAVException.ResourceParentNotFound(uri); name = segment; result = parentCollection.GetChild(name); } // ensure that no document URI ends in a trailing slash if (isCollection && result != null && !(result is VivendiCollection)) { throw WebDAVException.ResourceParentNotFound(uri); } return(result); }