func (*instanceIdGetterSuite) TestInstanceId(c *gc.C) { st := &fakeState{ entities: map[names.Tag]entityWithError{ u("x/0"): &fakeInstanceIdGetter{instanceId: "foo"}, u("x/1"): &fakeInstanceIdGetter{instanceId: "bar"}, u("x/2"): &fakeInstanceIdGetter{instanceId: "baz", err: "x2 error"}, u("x/3"): &fakeInstanceIdGetter{fetchError: "x3 error"}, }, } getCanRead := func() (common.AuthFunc, error) { x0 := u("x/0") x2 := u("x/2") x3 := u("x/3") return func(tag names.Tag) bool { return tag == x0 || tag == x2 || tag == x3 }, nil } ig := common.NewInstanceIdGetter(st, getCanRead) entities := params.Entities{[]params.Entity{ {"unit-x-0"}, {"unit-x-1"}, {"unit-x-2"}, {"unit-x-3"}, {"unit-x-4"}, }} results, err := ig.InstanceId(entities) c.Assert(err, jc.ErrorIsNil) c.Assert(results, jc.DeepEquals, params.StringResults{ Results: []params.StringResult{ {Result: "foo"}, {Error: apiservertesting.ErrUnauthorized}, {Error: ¶ms.Error{Message: "x2 error"}}, {Error: ¶ms.Error{Message: "x3 error"}}, {Error: apiservertesting.ErrUnauthorized}, }, }) }
func (*instanceIdGetterSuite) TestInstanceIdError(c *gc.C) { getCanRead := func() (common.AuthFunc, error) { return nil, fmt.Errorf("pow") } ig := common.NewInstanceIdGetter(&fakeState{}, getCanRead) _, err := ig.InstanceId(params.Entities{[]params.Entity{{"unit-x-0"}}}) c.Assert(err, gc.ErrorMatches, "pow") }
// 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 }
// NewInstancePollerAPI creates a new server-side InstancePoller API // facade. func NewInstancePollerAPI( st *state.State, resources facade.Resources, authorizer facade.Authorizer, clock clock.Clock, ) (*InstancePollerAPI, error) { if !authorizer.AuthModelManager() { // 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, ) // ModelConfig() and WatchForModelConfigChanges() are allowed // with unrestriced access. modelWatcher := common.NewModelWatcher( sti, resources, authorizer, ) // WatchModelMachines() is allowed with unrestricted access. machinesWatcher := common.NewModelMachinesWatcher( 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, ModelWatcher: modelWatcher, ModelMachinesWatcher: machinesWatcher, InstanceIdGetter: instanceIdGetter, StatusGetter: statusGetter, st: sti, resources: resources, authorizer: authorizer, accessMachine: accessMachine, clock: clock, }, nil }
// NewFirewallerAPI creates a new server-side FirewallerAPI facade. func NewFirewallerAPI( st *state.State, resources facade.Resources, authorizer facade.Authorizer, ) (*FirewallerAPI, error) { if !authorizer.AuthModelManager() { // Firewaller must run as environment manager. return nil, common.ErrPerm } // Set up the various authorization checkers. accessEnviron := common.AuthFuncForTagKind(names.ModelTagKind) accessUnit := common.AuthFuncForTagKind(names.UnitTagKind) accessService := common.AuthFuncForTagKind(names.ApplicationTagKind) 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, ) // ModelConfig() and WatchForModelConfigChanges() are allowed // with unrestriced access. modelWatcher := common.NewModelWatcher( st, resources, authorizer, ) // Watch() is supported for applications only. entityWatcher := common.NewAgentEntityWatcher( st, resources, accessService, ) // WatchUnits() is supported for machines. unitsWatcher := common.NewUnitsWatcher(st, resources, accessMachine, ) // WatchModelMachines() is allowed with unrestricted access. machinesWatcher := common.NewModelMachinesWatcher( st, resources, authorizer, ) // InstanceId() is supported for machines. instanceIdGetter := common.NewInstanceIdGetter( st, accessMachine, ) environConfigGetter := stateenvirons.EnvironConfigGetter{st} cloudSpecAPI := cloudspec.NewCloudSpec(environConfigGetter.CloudSpec, common.AuthFuncForTag(st.ModelTag())) return &FirewallerAPI{ LifeGetter: lifeGetter, ModelWatcher: modelWatcher, AgentEntityWatcher: entityWatcher, UnitsWatcher: unitsWatcher, ModelMachinesWatcher: machinesWatcher, InstanceIdGetter: instanceIdGetter, CloudSpecAPI: cloudSpecAPI, st: st, resources: resources, authorizer: authorizer, accessUnit: accessUnit, accessService: accessService, accessMachine: accessMachine, accessEnviron: accessEnviron, }, nil }
// NewStorageProvisionerAPI creates a new server-side StorageProvisionerAPI facade. func NewStorageProvisionerAPI(st *state.State, resources *common.Resources, authorizer common.Authorizer) (*StorageProvisionerAPI, error) { if !authorizer.AuthMachineAgent() { return nil, common.ErrPerm } canAccessStorageMachine := func(tag names.MachineTag, allowEnvironManager bool) bool { authEntityTag := authorizer.GetAuthTag() if tag == authEntityTag { // Machine agents can access volumes // scoped to their own machine. return true } parentId := state.ParentId(tag.Id()) if parentId == "" { return allowEnvironManager && authorizer.AuthEnvironManager() } // All containers with the authenticated // machine as a parent are accessible by it. return names.NewMachineTag(parentId) == authEntityTag } getScopeAuthFunc := func() (common.AuthFunc, error) { return func(tag names.Tag) bool { switch tag := tag.(type) { case names.EnvironTag: // Environment managers can access all volumes // and filesystems scoped to the environment. isEnvironManager := authorizer.AuthEnvironManager() return isEnvironManager && tag == st.EnvironTag() case names.MachineTag: return canAccessStorageMachine(tag, false) default: return false } }, nil } canAccessStorageEntity := func(tag names.Tag, allowMachines bool) bool { switch tag := tag.(type) { case names.VolumeTag: machineTag, ok := names.VolumeMachine(tag) if ok { return canAccessStorageMachine(machineTag, false) } return authorizer.AuthEnvironManager() case names.FilesystemTag: machineTag, ok := names.FilesystemMachine(tag) if ok { return canAccessStorageMachine(machineTag, false) } return authorizer.AuthEnvironManager() case names.MachineTag: return allowMachines && canAccessStorageMachine(tag, true) default: return false } } getStorageEntityAuthFunc := func() (common.AuthFunc, error) { return func(tag names.Tag) bool { return canAccessStorageEntity(tag, false) }, nil } getLifeAuthFunc := func() (common.AuthFunc, error) { return func(tag names.Tag) bool { return canAccessStorageEntity(tag, true) }, nil } getAttachmentAuthFunc := func() (func(names.MachineTag, names.Tag) bool, error) { // getAttachmentAuthFunc returns a function that validates // access by the authenticated user to an attachment. return func(machineTag names.MachineTag, attachmentTag names.Tag) bool { // Machine agents can access their own machine, and // machines contained. Environment managers can access // top-level machines. if !canAccessStorageMachine(machineTag, true) { return false } // Environment managers can access environment-scoped // volumes and volumes scoped to their own machines. // Other machine agents can access volumes regardless // of their scope. if !authorizer.AuthEnvironManager() { return true } var machineScope names.MachineTag var hasMachineScope bool switch attachmentTag := attachmentTag.(type) { case names.VolumeTag: machineScope, hasMachineScope = names.VolumeMachine(attachmentTag) case names.FilesystemTag: machineScope, hasMachineScope = names.FilesystemMachine(attachmentTag) } return !hasMachineScope || machineScope == authorizer.GetAuthTag() }, nil } getMachineAuthFunc := func() (common.AuthFunc, error) { return func(tag names.Tag) bool { if tag, ok := tag.(names.MachineTag); ok { return canAccessStorageMachine(tag, true) } return false }, nil } getBlockDevicesAuthFunc := func() (common.AuthFunc, error) { return func(tag names.Tag) bool { if tag, ok := tag.(names.MachineTag); ok { return canAccessStorageMachine(tag, false) } return false }, nil } stateInterface := getState(st) settings := getSettingsManager(st) return &StorageProvisionerAPI{ LifeGetter: common.NewLifeGetter(stateInterface, getLifeAuthFunc), DeadEnsurer: common.NewDeadEnsurer(stateInterface, getStorageEntityAuthFunc), EnvironWatcher: common.NewEnvironWatcher(stateInterface, resources, authorizer), InstanceIdGetter: common.NewInstanceIdGetter(st, getMachineAuthFunc), StatusSetter: common.NewStatusSetter(st, getStorageEntityAuthFunc), st: stateInterface, settings: settings, resources: resources, authorizer: authorizer, getScopeAuthFunc: getScopeAuthFunc, getStorageEntityAuthFunc: getStorageEntityAuthFunc, getAttachmentAuthFunc: getAttachmentAuthFunc, getMachineAuthFunc: getMachineAuthFunc, getBlockDevicesAuthFunc: getBlockDevicesAuthFunc, }, nil }
// 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 }