Exemplo n.º 1
0
def enforce(context, action, target, do_raise=True):
    """Verifies that the action is valid on the target in this context.

       :param context: Ex context
       :param action: string representing the action to be checked
           this should be colon separated for clarity.
           i.e. ``compute:create_instance``,
           ``compute:attach_volume``,
           ``volume:attach_volume``
       :param target: dictionary representing the object of the action
           for object creation this should be a dictionary representing the
           location of the object e.g. ``{'project_id': context.project_id}``
       :param do_raise: if True (the default), raises PolicyNotAuthorized;
           if False, returns False

       :raises nova.exception.PolicyNotAuthorized: if verification fails
           and do_raise is True.

       :return: returns a non-False value (not necessarily "True") if
           authorized, and the exact value False if not authorized and
           do_raise is False.
    """
    init()

    credentials = context.to_dict()

    # Add the exception arguments if asked to do a raise
    extra = {}
    if do_raise:
        extra.update(exc=exception.PolicyNotAuthorized, action=action)

    return policy.check(action, target, credentials, **extra)
Exemplo n.º 2
0
def check_is_admin(context):
    """Whether or not role contains 'admin' role according to policy setting.

    """
    init()

    credentials = context.to_dict()
    target = credentials

    return policy.check('context_is_admin', target, credentials)