log.error('user %s is disabled', username)

    return False

class  AuthUser(object):

    """

    A simple object that handles a mercurial username for authentication

    """

    def __init__(self):

        self.username = 'None'

        self.name = ''

        self.lastname = ''

        self.user_id = None

        self.is_authenticated = False

        self.is_admin = False

        self.permissions = {}

def set_available_permissions(config):

    """

    This function will propagate pylons globals with all available defined

    permission given in db. We don't wannt to check each time from db for new 

    permissions since adding a new permission also requires application restart

    ie. to decorate new views with the newly created permission

    """

    Fills user data with those from database and log out user if not present

    in database

    @param user:

    """

    sa = meta.Session

    dbuser = sa.query(User).get(user.user_id)

    if dbuser:

        user.username = dbuser.username

        user.is_admin = dbuser.admin

        user.name = dbuser.name

        user.lastname = dbuser.lastname

    else:

        user.is_authenticated = False

    meta.Session.remove()

    return user

def fill_perms(user):

    """

    Fills user permission attribute with permissions taken from database

    @param user:

    """

    sa = meta.Session