AutoPuTTY.formMain.CheckWriteAccess C# (CSharp) Метод

        private static bool CheckWriteAccess(string path)
        {
            bool writeAllow = false;
            bool writeDeny = false;
            DirectorySecurity accessControlList = Directory.GetAccessControl(path);
            AuthorizationRuleCollection accessRules = accessControlList.GetAccessRules(true, true, typeof(System.Security.Principal.SecurityIdentifier));

            foreach (FileSystemAccessRule rule in accessRules)
            {
                if ((FileSystemRights.Write & rule.FileSystemRights) != FileSystemRights.Write) continue;

                if (rule.AccessControlType == AccessControlType.Allow)
                    writeAllow = true;
                else if (rule.AccessControlType == AccessControlType.Deny)
                    writeDeny = true;
            }

            return writeAllow && !writeDeny;
        }