return False

        except:

            log.error(traceback.format_exc())

            auth_user.is_authenticated = False

            return False

        return True

    def fill_perms(self, user):

        """

        Fills user permission attribute with permissions taken from database

        works for permissions given for repositories, and for permissions that

        are granted to groups

        :param user: user instance to fill his perms

        """

        user.permissions['repositories'] = {}

        user.permissions['global'] = set()

        #======================================================================

        # fetch default permissions

        #======================================================================

        default_perms = self.sa.query(UserRepoToPerm, Repository, Permission)\

            .join((Repository, UserRepoToPerm.repository_id ==

                   Repository.repo_id))\

            .join((Permission, UserRepoToPerm.permission_id ==

                   Permission.permission_id))\

            .filter(UserRepoToPerm.user == default_user).all()

        if user.is_admin:

            #==================================================================

            # #admin have all default rights set to admin

            #==================================================================

            user.permissions['global'].add('hg.admin')

            for perm in default_perms:

                p = 'repository.admin'

                user.permissions['repositories'][perm.UserRepoToPerm.

                                                 repository.repo_name] = p

        else:

            #==================================================================

            # set default permissions

            #==================================================================

            uid = user.user_id