return True

        else:

            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.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

            raise formencode.Invalid(self.message('invalid_password',

                                     state=State_obj), value, state,

                                     error_dict=self.e_dict)            

        if user:

            if user.active:

                if user.username == username and user.password == crypted_passwd:

                    from pylons_app.lib.auth import AuthUser

                    auth_user = AuthUser()

                    auth_user.username = username

                    auth_user.is_authenticated = True

                    auth_user.is_admin = user.admin

                    auth_user.user_id = user.user_id

                    session['hg_app_user'] = auth_user

                    session.save()

                    log.info('user %s is now authenticated', username)

                    try:

                        user.last_login = datetime.datetime.now()

                        sa.add(user)

                        sa.commit()                        

                    except (OperationalError) as e:

                        log.error(e)

                        sa.rollback()

                else:

                    log.warning('user %s not authenticated', username)

                    raise formencode.Invalid(self.message('invalid_password',

                                             state=State_obj), value, state,

                                             error_dict=self.e_dict)

            else:

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

                raise formencode.Invalid(self.message('disabled_account',

                                         state=State_obj),

                                         value, state,

                                         error_dict=self.e_dict_disable)

class ValidRepoUser(formencode.validators.FancyValidator):

    def to_python(self, value, state):

        sa = meta.Session

        try:

            self.user_db = sa.query(User)\

                .filter(User.active == True)\

                .filter(User.username == value).one()

        except Exception:

            raise formencode.Invalid(_('This username is not valid'),

                                     value, state)

        return self.user_db.user_id