Exemplo n.º 1
0
// NewProvisionerAPI creates a new server-side ProvisionerAPI facade.
func NewProvisionerAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*ProvisionerAPI, error) {
	if !authorizer.AuthMachineAgent() && !authorizer.AuthEnvironManager() {
		return nil, common.ErrPerm
	}
	getAuthFunc := func() (common.AuthFunc, error) {
		isEnvironManager := authorizer.AuthEnvironManager()
		isMachineAgent := authorizer.AuthMachineAgent()
		authEntityTag := authorizer.GetAuthTag()

		return func(tag names.Tag) bool {
			if isMachineAgent && tag == authEntityTag {
				// A machine agent can always access its own machine.
				return true
			}
			switch tag := tag.(type) {
			case names.MachineTag:
				parentId := state.ParentId(tag.Id())
				if parentId == "" {
					// All top-level machines are accessible by the
					// environment manager.
					return isEnvironManager
				}
				// All containers with the authenticated machine as a
				// parent are accessible by it.
				// TODO(dfc) sometimes authEntity tag is nil, which is fine because nil is
				// only equal to nil, but it suggests someone is passing an authorizer
				// with a nil tag.
				return isMachineAgent && names.NewMachineTag(parentId) == authEntityTag
			default:
				return false
			}
		}, nil
	}
	env, err := st.Environment()
	if err != nil {
		return nil, err
	}
	urlGetter := common.NewToolsURLGetter(env.UUID(), st)
	return &ProvisionerAPI{
		Remover:                common.NewRemover(st, false, getAuthFunc),
		StatusSetter:           common.NewStatusSetter(st, getAuthFunc),
		StatusGetter:           common.NewStatusGetter(st, getAuthFunc),
		DeadEnsurer:            common.NewDeadEnsurer(st, getAuthFunc),
		PasswordChanger:        common.NewPasswordChanger(st, getAuthFunc),
		LifeGetter:             common.NewLifeGetter(st, getAuthFunc),
		StateAddresser:         common.NewStateAddresser(st),
		APIAddresser:           common.NewAPIAddresser(st, resources),
		EnvironWatcher:         common.NewEnvironWatcher(st, resources, authorizer),
		EnvironMachinesWatcher: common.NewEnvironMachinesWatcher(st, resources, authorizer),
		InstanceIdGetter:       common.NewInstanceIdGetter(st, getAuthFunc),
		ToolsFinder:            common.NewToolsFinder(st, st, urlGetter),
		st:                     st,
		resources:              resources,
		authorizer:             authorizer,
		getAuthFunc:            getAuthFunc,
	}, nil
}
Exemplo n.º 2
0
// NewInstancePollerAPI creates a new server-side InstancePoller API
// facade.
func NewInstancePollerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*InstancePollerAPI, error) {

	if !authorizer.AuthEnvironManager() {
		// InstancePoller must run as environment manager.
		return nil, common.ErrPerm
	}
	accessMachine := common.AuthFuncForTagKind(names.MachineTagKind)
	sti := getState(st)

	// Life() is supported for machines.
	lifeGetter := common.NewLifeGetter(
		sti,
		accessMachine,
	)
	// EnvironConfig() and WatchForEnvironConfigChanges() are allowed
	// with unrestriced access.
	environWatcher := common.NewEnvironWatcher(
		sti,
		resources,
		authorizer,
	)
	// WatchEnvironMachines() is allowed with unrestricted access.
	machinesWatcher := common.NewEnvironMachinesWatcher(
		sti,
		resources,
		authorizer,
	)
	// InstanceId() is supported for machines.
	instanceIdGetter := common.NewInstanceIdGetter(
		sti,
		accessMachine,
	)
	// Status() is supported for machines.
	statusGetter := common.NewStatusGetter(
		sti,
		accessMachine,
	)

	return &InstancePollerAPI{
		LifeGetter:             lifeGetter,
		EnvironWatcher:         environWatcher,
		EnvironMachinesWatcher: machinesWatcher,
		InstanceIdGetter:       instanceIdGetter,
		StatusGetter:           statusGetter,
		st:                     sti,
		resources:              resources,
		authorizer:             authorizer,
		accessMachine:          accessMachine,
	}, nil
}
Exemplo n.º 3
0
func (s *environMachinesWatcherSuite) TestWatchAuthError(c *gc.C) {
	authorizer := apiservertesting.FakeAuthorizer{
		Tag:            names.NewMachineTag("1"),
		EnvironManager: false,
	}
	resources := common.NewResources()
	s.AddCleanup(func(_ *gc.C) { resources.StopAll() })
	e := common.NewEnvironMachinesWatcher(
		&fakeEnvironMachinesWatcher{},
		resources,
		authorizer,
	)
	_, err := e.WatchEnvironMachines()
	c.Assert(err, gc.ErrorMatches, "permission denied")
	c.Assert(resources.Count(), gc.Equals, 0)
}
Exemplo n.º 4
0
func (s *environMachinesWatcherSuite) TestWatchEnvironMachines(c *gc.C) {
	authorizer := apiservertesting.FakeAuthorizer{
		Tag:            names.NewMachineTag("0"),
		EnvironManager: true,
	}
	resources := common.NewResources()
	s.AddCleanup(func(_ *gc.C) { resources.StopAll() })
	e := common.NewEnvironMachinesWatcher(
		&fakeEnvironMachinesWatcher{initial: []string{"foo"}},
		resources,
		authorizer,
	)
	result, err := e.WatchEnvironMachines()
	c.Assert(err, jc.ErrorIsNil)
	c.Assert(result, jc.DeepEquals, params.StringsWatchResult{"1", []string{"foo"}, nil})
	c.Assert(resources.Count(), gc.Equals, 1)
}
Exemplo n.º 5
0
// NewFirewallerAPI creates a new server-side FirewallerAPI facade.
func NewFirewallerAPI(
	st *state.State,
	resources *common.Resources,
	authorizer common.Authorizer,
) (*FirewallerAPI, error) {
	if !authorizer.AuthEnvironManager() {
		// Firewaller must run as environment manager.
		return nil, common.ErrPerm
	}
	// Set up the various authorization checkers.
	accessEnviron := common.AuthFuncForTagKind(names.EnvironTagKind)
	accessUnit := common.AuthFuncForTagKind(names.UnitTagKind)
	accessService := common.AuthFuncForTagKind(names.ServiceTagKind)
	accessMachine := common.AuthFuncForTagKind(names.MachineTagKind)
	accessUnitOrService := common.AuthEither(accessUnit, accessService)
	accessUnitServiceOrMachine := common.AuthEither(accessUnitOrService, accessMachine)

	// Life() is supported for units, services or machines.
	lifeGetter := common.NewLifeGetter(
		st,
		accessUnitServiceOrMachine,
	)
	// EnvironConfig() and WatchForEnvironConfigChanges() are allowed
	// with unrestriced access.
	environWatcher := common.NewEnvironWatcher(
		st,
		resources,
		authorizer,
	)
	// Watch() is supported for services only.
	entityWatcher := common.NewAgentEntityWatcher(
		st,
		resources,
		accessService,
	)
	// WatchUnits() is supported for machines.
	unitsWatcher := common.NewUnitsWatcher(st,
		resources,
		accessMachine,
	)
	// WatchEnvironMachines() is allowed with unrestricted access.
	machinesWatcher := common.NewEnvironMachinesWatcher(
		st,
		resources,
		authorizer,
	)
	// InstanceId() is supported for machines.
	instanceIdGetter := common.NewInstanceIdGetter(
		st,
		accessMachine,
	)

	return &FirewallerAPI{
		LifeGetter:             lifeGetter,
		EnvironWatcher:         environWatcher,
		AgentEntityWatcher:     entityWatcher,
		UnitsWatcher:           unitsWatcher,
		EnvironMachinesWatcher: machinesWatcher,
		InstanceIdGetter:       instanceIdGetter,
		st:                     st,
		resources:              resources,
		authorizer:             authorizer,
		accessUnit:             accessUnit,
		accessService:          accessService,
		accessMachine:          accessMachine,
		accessEnviron:          accessEnviron,
	}, nil
}