Dev2.PathOperations.Dev2FileSystemProvider.Put C# (CSharp) Method

        public int Put(Stream src, IActivityIOPath dst, Dev2CRUDOperationTO args, string whereToPut, List<string> filesToCleanup)
        {
            int result = -1;
            using (src)
            {
                //2013.05.29: Ashley Lewis for bug 9507 - default destination to source directory when destination is left blank or if it is not a rooted path
                if (!Path.IsPathRooted(dst.Path))
                {
                    //get just the directory path to put into
                    if (whereToPut != null)
                    {
                        //Make the destination directory equal to that directory
                        dst = ActivityIOFactory.CreatePathFromString(whereToPut + "\\" + dst.Path, dst.Username, dst.Password,dst.PrivateKeyFile);
                    }
                }
                if (args.Overwrite || !args.Overwrite && !FileExist(dst))
                {
                    _fileLock.EnterWriteLock();
                    try
                    {
                        if (!RequiresAuth(dst))
                        {
                            using (src)
                            {
                                File.WriteAllBytes(dst.Path, src.ToByteArray());
                                result = (int)src.Length;
                            }
                        }
                        else
                        {
                            // handle UNC path
                            SafeTokenHandle safeTokenHandle;
                            bool loginOk = LogonUser(ExtractUserName(dst), ExtractDomain(dst), dst.Password, LOGON32_LOGON_INTERACTIVE, LOGON32_PROVIDER_DEFAULT, out safeTokenHandle);


                            if (loginOk)
                            {
                                using (safeTokenHandle)
                                {

                                    WindowsIdentity newID = new WindowsIdentity(safeTokenHandle.DangerousGetHandle());
                                    using (WindowsImpersonationContext impersonatedUser = newID.Impersonate())
                                    {
                                        // Do the operation here
                                        using (src)
                                        {
                                            File.WriteAllBytes(dst.Path, src.ToByteArray());
                                            result = (int)src.Length;
                                        }

                                        // remove impersonation now
                                        impersonatedUser.Undo();
                                    }
                                }
                            }
                            else
                            {
                                // login failed
                                throw new Exception("Failed to authenticate with user [ " + dst.Username + " ] for resource [ " + dst.Path + " ] ");
                            }
                        }
                    }
                    finally
                    {
                        _fileLock.ExitWriteLock();
                    }
                }
            }
            return result;
        }