Exemple #1
0
// NewEnvironmentAPI creates a new instance of the Environment API.
func NewEnvironmentAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*EnvironmentAPI, error) {
	// Can always watch for environ changes.
	getCanWatch := common.AuthAlways(true)
	// Does not get the secrets.
	getCanReadSecrets := common.AuthAlways(false)
	return &EnvironmentAPI{
		EnvironWatcher: common.NewEnvironWatcher(st, resources, getCanWatch, getCanReadSecrets),
	}, nil
}
Exemple #2
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// 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 string) bool {
			if isMachineAgent && tag == authEntityTag {
				// A machine agent can always access its own machine.
				return true
			}
			t, err := names.ParseTag(tag, names.MachineTagKind)
			if err != nil {
				return false
			}
			parentId := state.ParentId(t.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.
			return isMachineAgent && names.NewMachineTag(parentId).String() == authEntityTag
		}, nil
	}
	// Both provisioner types can watch the environment.
	getCanWatch := common.AuthAlways(true)
	// Only the environment provisioner can read secrets.
	getCanReadSecrets := common.AuthAlways(authorizer.AuthEnvironManager())
	return &ProvisionerAPI{
		Remover:                common.NewRemover(st, false, getAuthFunc),
		StatusSetter:           common.NewStatusSetter(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),
		ToolsGetter:            common.NewToolsGetter(st, getAuthFunc),
		EnvironWatcher:         common.NewEnvironWatcher(st, resources, getCanWatch, getCanReadSecrets),
		EnvironMachinesWatcher: common.NewEnvironMachinesWatcher(st, resources, getCanReadSecrets),
		InstanceIdGetter:       common.NewInstanceIdGetter(st, getAuthFunc),
		st:                     st,
		resources:              resources,
		authorizer:             authorizer,
		getAuthFunc:            getAuthFunc,
		getCanWatchMachines:    getCanReadSecrets,
	}, nil
}
Exemple #3
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func (*environWatcherSuite) TestEnvironConfigGetAuthError(c *gc.C) {
	getCanReadSecrets := func() (common.AuthFunc, error) {
		return nil, fmt.Errorf("pow")
	}
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{envConfig: testingEnvConfig(c)},
		nil,
		nil,
		getCanReadSecrets,
	)
	_, err := e.EnvironConfig()
	c.Assert(err, gc.ErrorMatches, "pow")
}
Exemple #4
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func (*environWatcherSuite) TestWatchGetAuthError(c *gc.C) {
	getCanWatch := func() (common.AuthFunc, error) {
		return nil, fmt.Errorf("pow")
	}
	resources := common.NewResources()
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{},
		resources,
		getCanWatch,
		nil,
	)
	_, err := e.WatchForEnvironConfigChanges()
	c.Assert(err, gc.ErrorMatches, "pow")
	c.Assert(resources.Count(), gc.Equals, 0)
}
Exemple #5
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func (*environWatcherSuite) TestEnvironConfigFetchError(c *gc.C) {
	getCanReadSecrets := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			return true
		}, nil
	}
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{
			envConfigError: fmt.Errorf("pow"),
		},
		nil,
		nil,
		getCanReadSecrets,
	)
	_, err := e.EnvironConfig()
	c.Assert(err, gc.ErrorMatches, "pow")
}
Exemple #6
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// NewRsyslogAPI creates a new instance of the Rsyslog API.
func NewRsyslogAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*RsyslogAPI, error) {
	if !authorizer.AuthMachineAgent() && !authorizer.AuthUnitAgent() {
		return nil, common.ErrPerm
	}
	// Can always watch for environ changes.
	getCanWatch := common.AuthAlways(true)
	// Does not get the secrets.
	getCanReadSecrets := common.AuthAlways(false)
	return &RsyslogAPI{
		EnvironWatcher: common.NewEnvironWatcher(st, resources, getCanWatch, getCanReadSecrets),
		st:             st,
		authorizer:     authorizer,
		resources:      resources,
		canModify:      authorizer.AuthEnvironManager(),
		StateAddresser: common.NewStateAddresser(st),
	}, nil
}
Exemple #7
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func (*environWatcherSuite) TestWatchAuthError(c *gc.C) {
	getCanWatch := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			return false
		}, nil
	}
	resources := common.NewResources()
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{},
		resources,
		getCanWatch,
		nil,
	)
	result, err := e.WatchForEnvironConfigChanges()
	c.Assert(err, gc.ErrorMatches, "permission denied")
	c.Assert(result, gc.DeepEquals, params.NotifyWatchResult{})
	c.Assert(resources.Count(), gc.Equals, 0)
}
Exemple #8
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func (*environWatcherSuite) TestWatchSuccess(c *gc.C) {
	getCanWatch := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			return true
		}, nil
	}
	resources := common.NewResources()
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{},
		resources,
		getCanWatch,
		nil,
	)
	result, err := e.WatchForEnvironConfigChanges()
	c.Assert(err, gc.IsNil)
	c.Assert(result, gc.DeepEquals, params.NotifyWatchResult{"1", nil})
	c.Assert(resources.Count(), gc.Equals, 1)
}
Exemple #9
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func (*environWatcherSuite) TestEnvironConfigSuccess(c *gc.C) {
	getCanReadSecrets := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			return true
		}, nil
	}

	testingEnvConfig := testingEnvConfig(c)
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{envConfig: testingEnvConfig},
		nil,
		nil,
		getCanReadSecrets,
	)
	result, err := e.EnvironConfig()
	c.Assert(err, gc.IsNil)
	// Make sure we can read the secret attribute (i.e. it's not masked).
	c.Check(result.Config["secret"], gc.Equals, "pork")
	c.Check(map[string]interface{}(result.Config), jc.DeepEquals, testingEnvConfig.AllAttrs())
}
Exemple #10
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func (*environWatcherSuite) TestEnvironConfigReadSecretsFalse(c *gc.C) {
	getCanReadSecrets := func() (common.AuthFunc, error) {
		return func(tag string) bool {
			return false
		}, nil
	}

	testingEnvConfig := testingEnvConfig(c)
	e := common.NewEnvironWatcher(
		&fakeEnvironAccessor{envConfig: testingEnvConfig},
		nil,
		nil,
		getCanReadSecrets,
	)
	result, err := e.EnvironConfig()
	c.Assert(err, gc.IsNil)
	// Make sure the secret attribute is masked.
	c.Check(result.Config["secret"], gc.Equals, "not available")
	// And only that is masked.
	result.Config["secret"] = "pork"
	c.Check(map[string]interface{}(result.Config), jc.DeepEquals, testingEnvConfig.AllAttrs())
}
Exemple #11
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// NewUniterAPI creates a new instance of the Uniter API.
func NewUniterAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*UniterAPI, error) {
	if !authorizer.AuthUnitAgent() {
		return nil, common.ErrPerm
	}
	accessUnit := func() (common.AuthFunc, error) {
		return authorizer.AuthOwner, nil
	}
	accessService := func() (common.AuthFunc, error) {
		unit, ok := authorizer.GetAuthEntity().(*state.Unit)
		if !ok {
			panic("authenticated entity is not a unit")
		}
		return func(tag string) bool {
			return tag == names.NewServiceTag(unit.ServiceName()).String()
		}, nil
	}
	accessUnitOrService := common.AuthEither(accessUnit, accessService)
	// Uniter can always watch for environ changes.
	getCanWatch := common.AuthAlways(true)
	// Uniter can not get the secrets.
	getCanReadSecrets := common.AuthAlways(false)
	return &UniterAPI{
		LifeGetter:         common.NewLifeGetter(st, accessUnitOrService),
		StatusSetter:       common.NewStatusSetter(st, accessUnit),
		DeadEnsurer:        common.NewDeadEnsurer(st, accessUnit),
		AgentEntityWatcher: common.NewAgentEntityWatcher(st, resources, accessUnitOrService),
		APIAddresser:       common.NewAPIAddresser(st, resources),
		EnvironWatcher:     common.NewEnvironWatcher(st, resources, getCanWatch, getCanReadSecrets),

		st:            st,
		auth:          authorizer,
		resources:     resources,
		accessUnit:    accessUnit,
		accessService: accessService,
	}, nil
}
Exemple #12
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// 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.
	accessUnit := getAuthFuncForTagKind(names.UnitTagKind)
	accessService := getAuthFuncForTagKind(names.ServiceTagKind)
	accessMachine := getAuthFuncForTagKind(names.MachineTagKind)
	accessEnviron := getAuthFuncForTagKind("")
	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,
		accessEnviron,
		accessEnviron,
	)
	// Watch() is supported for units or services.
	entityWatcher := common.NewAgentEntityWatcher(
		st,
		resources,
		accessUnitOrService,
	)
	// WatchUnits() is supported for machines.
	unitsWatcher := common.NewUnitsWatcher(st,
		resources,
		accessMachine,
	)
	// WatchEnvironMachines() is allowed with unrestricted access.
	machinesWatcher := common.NewEnvironMachinesWatcher(
		st,
		resources,
		accessEnviron,
	)
	// 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,
	}, nil
}