/* Copyright (c) Edgeless Systems GmbH SPDX-License-Identifier: AGPL-3.0-only */ package cmd import ( "bytes" "context" "encoding/hex" "encoding/json" "errors" "net" "strconv" "strings" "testing" "time" "github.com/edgelesssys/constellation/v2/bootstrapper/initproto" "github.com/edgelesssys/constellation/v2/cli/internal/clusterid" "github.com/edgelesssys/constellation/v2/internal/atls" "github.com/edgelesssys/constellation/v2/internal/attestation/measurements" "github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider" "github.com/edgelesssys/constellation/v2/internal/cloud/gcpshared" "github.com/edgelesssys/constellation/v2/internal/config" "github.com/edgelesssys/constellation/v2/internal/constants" "github.com/edgelesssys/constellation/v2/internal/file" "github.com/edgelesssys/constellation/v2/internal/grpc/atlscredentials" "github.com/edgelesssys/constellation/v2/internal/grpc/dialer" "github.com/edgelesssys/constellation/v2/internal/grpc/testdialer" "github.com/edgelesssys/constellation/v2/internal/kms/uri" "github.com/edgelesssys/constellation/v2/internal/license" "github.com/edgelesssys/constellation/v2/internal/logger" "github.com/edgelesssys/constellation/v2/internal/variant" "github.com/edgelesssys/constellation/v2/internal/versions" "github.com/spf13/afero" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" "google.golang.org/grpc" ) func TestInitArgumentValidation(t *testing.T) { assert := assert.New(t) cmd := NewInitCmd() assert.NoError(cmd.ValidateArgs(nil)) assert.Error(cmd.ValidateArgs([]string{"something"})) assert.Error(cmd.ValidateArgs([]string{"sth", "sth"})) } func TestInitialize(t *testing.T) { gcpServiceAccKey := &gcpshared.ServiceAccountKey{ Type: "service_account", } testInitResp := &initproto.InitResponse{ Kubeconfig: []byte("kubeconfig"), OwnerId: []byte("ownerID"), ClusterId: []byte("clusterID"), } serviceAccPath := "/test/service-account.json" someErr := errors.New("failed") testCases := map[string]struct { provider cloudprovider.Provider idFile *clusterid.File configMutator func(*config.Config) serviceAccKey *gcpshared.ServiceAccountKey initServerAPI *stubInitServer retriable bool masterSecretShouldExist bool wantErr bool }{ "initialize some gcp instances": { provider: cloudprovider.GCP, idFile: &clusterid.File{IP: "192.0.2.1"}, configMutator: func(c *config.Config) { c.Provider.GCP.ServiceAccountKeyPath = serviceAccPath }, serviceAccKey: gcpServiceAccKey, initServerAPI: &stubInitServer{initResp: testInitResp}, }, "initialize some azure instances": { provider: cloudprovider.Azure, idFile: &clusterid.File{IP: "192.0.2.1"}, initServerAPI: &stubInitServer{initResp: testInitResp}, }, "initialize some qemu instances": { provider: cloudprovider.QEMU, idFile: &clusterid.File{IP: "192.0.2.1"}, initServerAPI: &stubInitServer{initResp: testInitResp}, }, "non retriable error": { provider: cloudprovider.QEMU, idFile: &clusterid.File{IP: "192.0.2.1"}, initServerAPI: &stubInitServer{initErr: &nonRetriableError{someErr}}, retriable: false, masterSecretShouldExist: true, wantErr: true, }, "empty id file": { provider: cloudprovider.GCP, idFile: &clusterid.File{}, initServerAPI: &stubInitServer{}, retriable: true, wantErr: true, }, "no id file": { provider: cloudprovider.GCP, retriable: true, wantErr: true, }, "init call fails": { provider: cloudprovider.GCP, idFile: &clusterid.File{IP: "192.0.2.1"}, initServerAPI: &stubInitServer{initErr: someErr}, retriable: true, wantErr: true, }, "k8s version without v works": { provider: cloudprovider.Azure, idFile: &clusterid.File{IP: "192.0.2.1"}, initServerAPI: &stubInitServer{initResp: testInitResp}, configMutator: func(c *config.Config) { c.KubernetesVersion = strings.TrimPrefix(string(versions.Default), "v") }, }, } for name, tc := range testCases { t.Run(name, func(t *testing.T) { assert := assert.New(t) require := require.New(t) // Networking netDialer := testdialer.NewBufconnDialer() newDialer := func(atls.Validator) *dialer.Dialer { return dialer.New(nil, nil, netDialer) } serverCreds := atlscredentials.New(nil, nil) initServer := grpc.NewServer(grpc.Creds(serverCreds)) initproto.RegisterAPIServer(initServer, tc.initServerAPI) port := strconv.Itoa(constants.BootstrapperPort) listener := netDialer.GetListener(net.JoinHostPort("192.0.2.1", port)) go initServer.Serve(listener) defer initServer.GracefulStop() // Command cmd := NewInitCmd() var out bytes.Buffer cmd.SetOut(&out) var errOut bytes.Buffer cmd.SetErr(&errOut) // Flags cmd.Flags().String("config", constants.ConfigFilename, "") // register persistent flag manually cmd.Flags().Bool("force", true, "") // register persistent flag manually // File system preparation fs := afero.NewMemMapFs() fileHandler := file.NewHandler(fs) config := defaultConfigWithExpectedMeasurements(t, config.Default(), tc.provider) if tc.configMutator != nil { tc.configMutator(config) } require.NoError(fileHandler.WriteYAML(constants.ConfigFilename, config, file.OptNone)) if tc.idFile != nil { tc.idFile.CloudProvider = tc.provider require.NoError(fileHandler.WriteJSON(constants.ClusterIDsFileName, tc.idFile, file.OptNone)) } if tc.serviceAccKey != nil { require.NoError(fileHandler.WriteJSON(serviceAccPath, tc.serviceAccKey, file.OptNone)) } ctx := context.Background() ctx, cancel := context.WithTimeout(ctx, 4*time.Second) defer cancel() cmd.SetContext(ctx) i := &initCmd{log: logger.NewTest(t), spinner: &nopSpinner{}} err := i.initialize(cmd, newDialer, fileHandler, &stubLicenseClient{}) if tc.wantErr { assert.Error(err) if !tc.retriable { assert.Contains(errOut.String(), "This error is not recoverable") } else { assert.Empty(errOut.String()) } if !tc.masterSecretShouldExist { _, err = fileHandler.Stat(constants.MasterSecretFilename) assert.Error(err) } return } require.NoError(err) // assert.Contains(out.String(), base64.StdEncoding.EncodeToString([]byte("ownerID"))) assert.Contains(out.String(), hex.EncodeToString([]byte("clusterID"))) var secret uri.MasterSecret assert.NoError(fileHandler.ReadJSON(constants.MasterSecretFilename, &secret)) assert.NotEmpty(secret.Key) assert.NotEmpty(secret.Salt) }) } } func TestWriteOutput(t *testing.T) { assert := assert.New(t) require := require.New(t) resp := &initproto.InitResponse{ OwnerId: []byte("ownerID"), ClusterId: []byte("clusterID"), Kubeconfig: []byte("kubeconfig"), } ownerID := hex.EncodeToString(resp.OwnerId) clusterID := hex.EncodeToString(resp.ClusterId) expectedIDFile := clusterid.File{ ClusterID: clusterID, OwnerID: ownerID, IP: "cluster-ip", UID: "test-uid", } var out bytes.Buffer testFs := afero.NewMemMapFs() fileHandler := file.NewHandler(testFs) idFile := clusterid.File{ UID: "test-uid", IP: "cluster-ip", } i := &initCmd{ log: logger.NewTest(t), merger: &stubMerger{}, } err := i.writeOutput(idFile, resp, false, &out, fileHandler) require.NoError(err) // assert.Contains(out.String(), ownerID) assert.Contains(out.String(), clusterID) assert.Contains(out.String(), constants.AdminConfFilename) afs := afero.Afero{Fs: testFs} adminConf, err := afs.ReadFile(constants.AdminConfFilename) assert.NoError(err) assert.Equal(string(resp.Kubeconfig), string(adminConf)) idsFile, err := afs.ReadFile(constants.ClusterIDsFileName) assert.NoError(err) var testIDFile clusterid.File err = json.Unmarshal(idsFile, &testIDFile) assert.NoError(err) assert.Equal(expectedIDFile, testIDFile) // test config merging out.Reset() require.NoError(afs.Remove(constants.AdminConfFilename)) err = i.writeOutput(idFile, resp, true, &out, fileHandler) require.NoError(err) // assert.Contains(out.String(), ownerID) assert.Contains(out.String(), clusterID) assert.Contains(out.String(), constants.AdminConfFilename) assert.Contains(out.String(), "Constellation kubeconfig merged with default config") assert.Contains(out.String(), "You can now connect to your cluster") // test config merging with env vars set i.merger = &stubMerger{envVar: "/some/path/to/kubeconfig"} out.Reset() require.NoError(afs.Remove(constants.AdminConfFilename)) err = i.writeOutput(idFile, resp, true, &out, fileHandler) require.NoError(err) // assert.Contains(out.String(), ownerID) assert.Contains(out.String(), clusterID) assert.Contains(out.String(), constants.AdminConfFilename) assert.Contains(out.String(), "Constellation kubeconfig merged with default config") assert.Contains(out.String(), "Warning: KUBECONFIG environment variable is set") } func TestReadOrGenerateMasterSecret(t *testing.T) { testCases := map[string]struct { filename string createFileFunc func(handler file.Handler) error fs func() afero.Fs wantErr bool }{ "file with secret exists": { filename: "someSecret", fs: afero.NewMemMapFs, createFileFunc: func(handler file.Handler) error { return handler.WriteJSON( "someSecret", uri.MasterSecret{Key: []byte("constellation-master-secret"), Salt: []byte("constellation-32Byte-length-salt")}, file.OptNone, ) }, wantErr: false, }, "no file given": { filename: "", createFileFunc: func(handler file.Handler) error { return nil }, fs: afero.NewMemMapFs, wantErr: false, }, "file does not exist": { filename: "nonExistingSecret", createFileFunc: func(handler file.Handler) error { return nil }, fs: afero.NewMemMapFs, wantErr: true, }, "file is empty": { filename: "emptySecret", createFileFunc: func(handler file.Handler) error { return handler.Write("emptySecret", []byte{}, file.OptNone) }, fs: afero.NewMemMapFs, wantErr: true, }, "salt too short": { filename: "shortSecret", createFileFunc: func(handler file.Handler) error { return handler.WriteJSON( "shortSecret", uri.MasterSecret{Key: []byte("constellation-master-secret"), Salt: []byte("short")}, file.OptNone, ) }, fs: afero.NewMemMapFs, wantErr: true, }, "key too short": { filename: "shortSecret", createFileFunc: func(handler file.Handler) error { return handler.WriteJSON( "shortSecret", uri.MasterSecret{Key: []byte("short"), Salt: []byte("constellation-32Byte-length-salt")}, file.OptNone, ) }, fs: afero.NewMemMapFs, wantErr: true, }, "invalid file content": { filename: "unencodedSecret", createFileFunc: func(handler file.Handler) error { return handler.Write("unencodedSecret", []byte("invalid-constellation-master-secret"), file.OptNone) }, fs: afero.NewMemMapFs, wantErr: true, }, "file not writeable": { filename: "", createFileFunc: func(handler file.Handler) error { return nil }, fs: func() afero.Fs { return afero.NewReadOnlyFs(afero.NewMemMapFs()) }, wantErr: true, }, } for name, tc := range testCases { t.Run(name, func(t *testing.T) { assert := assert.New(t) require := require.New(t) fileHandler := file.NewHandler(tc.fs()) require.NoError(tc.createFileFunc(fileHandler)) var out bytes.Buffer i := &initCmd{log: logger.NewTest(t)} secret, err := i.readOrGenerateMasterSecret(&out, fileHandler, tc.filename) if tc.wantErr { assert.Error(err) } else { assert.NoError(err) if tc.filename == "" { require.Contains(out.String(), constants.MasterSecretFilename) filename := strings.Split(out.String(), "./") tc.filename = strings.Trim(filename[1], "\n") } var masterSecret uri.MasterSecret require.NoError(fileHandler.ReadJSON(tc.filename, &masterSecret)) assert.Equal(masterSecret.Key, secret.Key) assert.Equal(masterSecret.Salt, secret.Salt) } }) } } func TestAttestation(t *testing.T) { assert := assert.New(t) require := require.New(t) initServerAPI := &stubInitServer{initResp: &initproto.InitResponse{ Kubeconfig: []byte("kubeconfig"), OwnerId: []byte("ownerID"), ClusterId: []byte("clusterID"), }} existingIDFile := &clusterid.File{IP: "192.0.2.4", CloudProvider: cloudprovider.QEMU} netDialer := testdialer.NewBufconnDialer() issuer := &testIssuer{ Getter: variant.QEMUVTPM{}, pcrs: map[uint32][]byte{ 0: bytes.Repeat([]byte{0xFF}, 32), 1: bytes.Repeat([]byte{0xFF}, 32), 2: bytes.Repeat([]byte{0xFF}, 32), 3: bytes.Repeat([]byte{0xFF}, 32), }, } serverCreds := atlscredentials.New(issuer, nil) initServer := grpc.NewServer(grpc.Creds(serverCreds)) initproto.RegisterAPIServer(initServer, initServerAPI) port := strconv.Itoa(constants.BootstrapperPort) listener := netDialer.GetListener(net.JoinHostPort("192.0.2.4", port)) go initServer.Serve(listener) defer initServer.GracefulStop() cmd := NewInitCmd() cmd.Flags().String("config", constants.ConfigFilename, "") // register persistent flag manually cmd.Flags().Bool("force", true, "") // register persistent flag manually var out bytes.Buffer cmd.SetOut(&out) var errOut bytes.Buffer cmd.SetErr(&errOut) fs := afero.NewMemMapFs() fileHandler := file.NewHandler(fs) require.NoError(fileHandler.WriteJSON(constants.ClusterIDsFileName, existingIDFile, file.OptNone)) cfg := config.Default() cfg.Image = "image" cfg.RemoveProviderExcept(cloudprovider.QEMU) cfg.Attestation.QEMUVTPM.Measurements[0] = measurements.WithAllBytes(0x00, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[1] = measurements.WithAllBytes(0x11, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[2] = measurements.WithAllBytes(0x22, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[3] = measurements.WithAllBytes(0x33, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[4] = measurements.WithAllBytes(0x44, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[9] = measurements.WithAllBytes(0x99, measurements.Enforce, measurements.PCRMeasurementLength) cfg.Attestation.QEMUVTPM.Measurements[12] = measurements.WithAllBytes(0xcc, measurements.Enforce, measurements.PCRMeasurementLength) require.NoError(fileHandler.WriteYAML(constants.ConfigFilename, cfg, file.OptNone)) newDialer := func(v atls.Validator) *dialer.Dialer { validator := &testValidator{ Getter: variant.QEMUVTPM{}, pcrs: cfg.GetAttestationConfig().GetMeasurements(), } return dialer.New(nil, validator, netDialer) } ctx := context.Background() ctx, cancel := context.WithTimeout(ctx, 4*time.Second) defer cancel() cmd.SetContext(ctx) i := &initCmd{log: logger.NewTest(t), spinner: &nopSpinner{}} err := i.initialize(cmd, newDialer, fileHandler, &stubLicenseClient{}) assert.Error(err) // make sure the error is actually a TLS handshake error assert.Contains(err.Error(), "transport: authentication handshake failed") } type testValidator struct { variant.Getter pcrs measurements.M } func (v *testValidator) Validate(_ context.Context, attDoc []byte, _ []byte) ([]byte, error) { var attestation struct { UserData []byte PCRs map[uint32][]byte } if err := json.Unmarshal(attDoc, &attestation); err != nil { return nil, err } for k, pcr := range v.pcrs { if !bytes.Equal(attestation.PCRs[k], pcr.Expected[:]) { return nil, errors.New("invalid PCR value") } } return attestation.UserData, nil } type testIssuer struct { variant.Getter pcrs map[uint32][]byte } func (i *testIssuer) Issue(_ context.Context, userData []byte, _ []byte) ([]byte, error) { return json.Marshal( struct { UserData []byte PCRs map[uint32][]byte }{ UserData: userData, PCRs: i.pcrs, }, ) } type stubInitServer struct { initResp *initproto.InitResponse initErr error initproto.UnimplementedAPIServer } func (s *stubInitServer) Init(_ context.Context, _ *initproto.InitRequest) (*initproto.InitResponse, error) { return s.initResp, s.initErr } type stubMerger struct { envVar string mergeErr error } func (m *stubMerger) mergeConfigs(string, file.Handler) error { return m.mergeErr } func (m *stubMerger) kubeconfigEnvVar() string { return m.envVar } func defaultConfigWithExpectedMeasurements(t *testing.T, conf *config.Config, csp cloudprovider.Provider) *config.Config { t.Helper() conf.Image = "v" + constants.VersionInfo() conf.Name = "kubernetes" switch csp { case cloudprovider.Azure: conf.Provider.Azure.SubscriptionID = "01234567-0123-0123-0123-0123456789ab" conf.Provider.Azure.TenantID = "01234567-0123-0123-0123-0123456789ab" conf.Provider.Azure.Location = "test-location" conf.Provider.Azure.UserAssignedIdentity = "test-identity" conf.Provider.Azure.ResourceGroup = "test-resource-group" conf.Provider.Azure.AppClientID = "01234567-0123-0123-0123-0123456789ab" conf.Provider.Azure.ClientSecretValue = "test-client-secret" conf.Attestation.AzureSEVSNP.Measurements[4] = measurements.WithAllBytes(0x44, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.AzureSEVSNP.Measurements[9] = measurements.WithAllBytes(0x11, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.AzureSEVSNP.Measurements[12] = measurements.WithAllBytes(0xcc, measurements.Enforce, measurements.PCRMeasurementLength) case cloudprovider.GCP: conf.Provider.GCP.Region = "test-region" conf.Provider.GCP.Project = "test-project" conf.Provider.GCP.Zone = "test-zone" conf.Provider.GCP.ServiceAccountKeyPath = "test-key-path" conf.Attestation.GCPSEVES.Measurements[4] = measurements.WithAllBytes(0x44, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.GCPSEVES.Measurements[9] = measurements.WithAllBytes(0x11, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.GCPSEVES.Measurements[12] = measurements.WithAllBytes(0xcc, measurements.Enforce, measurements.PCRMeasurementLength) case cloudprovider.QEMU: conf.Attestation.QEMUVTPM.Measurements[4] = measurements.WithAllBytes(0x44, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.QEMUVTPM.Measurements[9] = measurements.WithAllBytes(0x11, measurements.Enforce, measurements.PCRMeasurementLength) conf.Attestation.QEMUVTPM.Measurements[12] = measurements.WithAllBytes(0xcc, measurements.Enforce, measurements.PCRMeasurementLength) } conf.RemoveProviderExcept(csp) return conf } type stubLicenseClient struct{} func (c *stubLicenseClient) QuotaCheck(_ context.Context, _ license.QuotaCheckRequest) (license.QuotaCheckResponse, error) { return license.QuotaCheckResponse{ Quota: 25, }, nil }