class G2Authorizer(ftpserver.DummyAuthorizer):
  def validate_authentication(self, username, password):
    User.objects.update() #avoid THE FTP BUG!
    if not bool(authenticate(username=username, password=password)):
      return False
    try:
      homedir = os.path.join(BASE_DIR, username.lower())
      os.mkdir(homedir)
    except OSError, e:
      if e.errno != errno.EEXIST: #file already exists
        raise e

    try:
      self.add_user(username, 'password', homedir, perm='lweadf') #list, write, CWD
    except ftpserver.AuthorizerError:
      pass #already logged in

    return True