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fix(auth): enforce scoped authorization for Kubernetes-backed resources #3281
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136 changes: 136 additions & 0 deletions
136
go/core/internal/grpcserver/resource_authorization_test.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,136 @@ | ||
| package grpcserver | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "sync/atomic" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| atev1alpha1 "go.ate.dev/substrate/pkg/api/v1alpha1" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/metadata" | ||
| corev1 "k8s.io/api/core/v1" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/client/fake" | ||
|
|
||
| apiauthorization "github.com/kagent-dev/kagent/go/api/authorization" | ||
| apiv1 "github.com/kagent-dev/kagent/go/api/gen/kagent/api/v1" | ||
| "github.com/kagent-dev/kagent/go/api/v1alpha3" | ||
| modelservice "github.com/kagent-dev/kagent/go/core/internal/service/model" | ||
| promptservice "github.com/kagent-dev/kagent/go/core/internal/service/prompttemplate" | ||
| systemservice "github.com/kagent-dev/kagent/go/core/internal/service/system" | ||
| "github.com/kagent-dev/kagent/go/core/pkg/auth" | ||
| ) | ||
|
|
||
| type resourceAuthorizer struct{ denySummary bool } | ||
|
|
||
| func (a resourceAuthorizer) Check(_ context.Context, _ auth.Principal, verb auth.Verb, resource auth.Resource) error { | ||
| if resource.Type == "SystemSummary" && !a.denySummary { | ||
| return nil | ||
| } | ||
| if resource.Name != "allowed" || (resource.Type == "ModelProviderConfig" && verb == auth.VerbUpdate) { | ||
| return errors.New("denied") | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (resourceAuthorizer) Scope(_ context.Context, _ auth.Principal, _ auth.Verb, _ string) (apiauthorization.AuthorizationScope, error) { | ||
| return apiauthorization.AuthorizationScope{Kind: apiauthorization.ScopeAnyOf, AnyOf: []apiauthorization.ScopeClause{{All: []apiauthorization.ScopePredicate{{Attribute: apiauthorization.AttributeName, Operator: apiauthorization.ScopeIn, Values: []string{"allowed"}}}}}}, nil | ||
| } | ||
|
|
||
| type deniedProviderRefresher struct{ calls atomic.Int32 } | ||
|
|
||
| func (r *deniedProviderRefresher) RefreshModelProviderConfigModels(context.Context, string, string) ([]string, error) { | ||
| r.calls.Add(1) | ||
| return []string{"unexpected"}, nil | ||
| } | ||
|
|
||
| func TestKubernetesResourceScopesThroughGeneratedClients(t *testing.T) { | ||
| scheme := runtime.NewScheme() | ||
| require.NoError(t, corev1.AddToScheme(scheme)) | ||
| require.NoError(t, v1alpha3.AddToScheme(scheme)) | ||
| require.NoError(t, atev1alpha1.AddToScheme(scheme)) | ||
| kube := fake.NewClientBuilder().WithScheme(scheme).WithObjects( | ||
| &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "allowed", Labels: map[string]string{"kagent.dev/prompt-library": "true"}}, Data: map[string]string{"visible": "prompt"}}, | ||
| &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "hidden", Labels: map[string]string{"kagent.dev/prompt-library": "true"}}, Data: map[string]string{"private": "prompt"}}, | ||
| &v1alpha3.ModelProviderConfig{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "allowed"}, Status: v1alpha3.ModelProviderConfigStatus{Conditions: []metav1.Condition{{Type: v1alpha3.ModelProviderConfigConditionTypeReady, Status: metav1.ConditionTrue}}, DiscoveredModels: []string{"cached"}}}, | ||
| &v1alpha3.ModelProviderConfig{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "hidden"}, Status: v1alpha3.ModelProviderConfigStatus{Conditions: []metav1.Condition{{Type: v1alpha3.ModelProviderConfigConditionTypeReady, Status: metav1.ConditionTrue}}}}, | ||
| &atev1alpha1.WorkerPool{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "allowed"}}, | ||
| &atev1alpha1.WorkerPool{ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "hidden"}}, | ||
| ).Build() | ||
| authorizer := resourceAuthorizer{} | ||
| refresher := &deniedProviderRefresher{} | ||
| connection := newConfigurationConnection(t, kube, func(config *Config) { | ||
| config.PromptTemplateService = promptservice.NewService(kube, authorizer) | ||
| config.ModelService = modelservice.NewService(kube, authorizer, "team", modelservice.WithProviderModelRefresher(refresher)) | ||
| config.SystemService = systemservice.NewService(kube, []string{"team"}, authorizer, emptySystemATEClient{}) | ||
| }) | ||
| ctx := metadata.NewOutgoingContext(t.Context(), metadata.Pairs("x-user-id", "reader")) | ||
| prompts := apiv1.NewPromptTemplateServiceClient(connection) | ||
| libraries, err := prompts.ListPromptTemplates(ctx, &apiv1.ListPromptTemplatesRequest{Namespace: "team"}) | ||
| require.NoError(t, err) | ||
| require.Len(t, libraries.GetPromptTemplates(), 1) | ||
| require.Equal(t, "allowed", libraries.GetPromptTemplates()[0].GetRef().GetName()) | ||
| _, err = prompts.GetPromptTemplate(ctx, &apiv1.GetPromptTemplateRequest{Ref: &apiv1.ResourceReference{Namespace: "team", Name: "hidden"}}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
| _, err = prompts.CreatePromptTemplate(ctx, &apiv1.CreatePromptTemplateRequest{Ref: &apiv1.ResourceReference{Namespace: "team", Name: "denied"}, Data: map[string]string{"key": "value"}}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
|
|
||
| models := apiv1.NewModelServiceClient(connection) | ||
| providers, err := models.ListConfiguredProviders(ctx, &apiv1.ListConfiguredProvidersRequest{}) | ||
| require.NoError(t, err) | ||
| require.Len(t, providers.GetProviders(), 1) | ||
| require.Equal(t, "allowed", providers.GetProviders()[0].GetName()) | ||
| cached, err := models.ListProviderModels(ctx, &apiv1.ListProviderModelsRequest{ProviderName: "allowed"}) | ||
| require.NoError(t, err) | ||
| require.Equal(t, []string{"cached"}, cached.GetModels()) | ||
| _, err = models.ListProviderModels(ctx, &apiv1.ListProviderModelsRequest{ProviderName: "hidden"}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
| _, err = models.ListProviderModels(ctx, &apiv1.ListProviderModelsRequest{ProviderName: "allowed", Refresh: true}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
| require.Zero(t, refresher.calls.Load()) | ||
|
|
||
| summary, err := apiv1.NewSystemServiceClient(connection).GetSubstrateSummary(ctx, &apiv1.GetSubstrateSummaryRequest{Namespace: "team"}) | ||
| require.NoError(t, err) | ||
| require.Len(t, summary.GetWorkerPools(), 1) | ||
| require.Equal(t, "allowed", summary.GetWorkerPools()[0].GetRef().GetName()) | ||
| require.Zero(t, summary.GetActorCount()) | ||
| require.Empty(t, summary.GetActorTemplates()) | ||
| } | ||
|
|
||
| func TestProviderModelRefreshDeniedThroughShareRPC(t *testing.T) { | ||
| scheme := runtime.NewScheme() | ||
| require.NoError(t, v1alpha3.AddToScheme(scheme)) | ||
| kube := fake.NewClientBuilder().WithScheme(scheme).WithObjects( | ||
| &v1alpha3.ModelProviderConfig{ | ||
| ObjectMeta: metav1.ObjectMeta{Namespace: "team", Name: "provider"}, | ||
| Status: v1alpha3.ModelProviderConfigStatus{DiscoveredModels: []string{"cached"}}, | ||
| }, | ||
| ).Build() | ||
| refresher := &deniedProviderRefresher{} | ||
| connection := newConfigurationConnection(t, kube, func(config *Config) { | ||
| config.ShareStore = &testShareStore{ | ||
| sessionShare: &apiv1.SessionShare{SessionId: testSessionID.String()}, ownerUserID: "owner", | ||
| } | ||
| config.ModelService = modelservice.NewService(kube, &auth.NoopAuthorizer{}, "team", modelservice.WithProviderModelRefresher(refresher)) | ||
| }) | ||
| ctx := metadata.NewOutgoingContext(t.Context(), metadata.Pairs("x-user-id", "visitor", "x-share-token", "share")) | ||
| models := apiv1.NewModelServiceClient(connection) | ||
| cached, err := models.ListProviderModels(ctx, &apiv1.ListProviderModelsRequest{ProviderName: "provider"}) | ||
| require.NoError(t, err) | ||
| require.Equal(t, []string{"cached"}, cached.GetModels()) | ||
| _, err = models.ListProviderModels(ctx, &apiv1.ListProviderModelsRequest{ProviderName: "provider", Refresh: true}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
| require.Zero(t, refresher.calls.Load()) | ||
| } | ||
|
|
||
| func TestSummaryCapabilityDeniedThroughGeneratedClient(t *testing.T) { | ||
| connection := newConfigurationConnection(t, nil, func(config *Config) { | ||
| config.SystemService = systemservice.NewService(nil, nil, resourceAuthorizer{denySummary: true}, nil) | ||
| }) | ||
| ctx := metadata.NewOutgoingContext(t.Context(), metadata.Pairs("x-user-id", "reader")) | ||
| _, err := apiv1.NewSystemServiceClient(connection).GetSubstrateSummary(ctx, &apiv1.GetSubstrateSummaryRequest{}) | ||
| assertGRPCCode(t, err, codes.PermissionDenied) | ||
| } | ||
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Can we also exercise this through a real share-bearing RPC? The service test constructs
ShareContextdirectly, while this generated-client case only covers ordinary authorizer denial. A validx-share-tokenwith an otherwise permissive authorizer would verify the interceptor-to-service path and that refresh is denied before calling the refresher.