mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-09-20 08:15:56 +00:00
299 lines
8.3 KiB
Go
299 lines
8.3 KiB
Go
/*
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Copyright (c) Edgeless Systems GmbH
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SPDX-License-Identifier: AGPL-3.0-only
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*/
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package cmd
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import (
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"bytes"
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"context"
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"errors"
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"net"
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"strconv"
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"testing"
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"time"
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"github.com/edgelesssys/constellation/v2/cli/internal/state"
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"github.com/edgelesssys/constellation/v2/disk-mapper/recoverproto"
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"github.com/edgelesssys/constellation/v2/internal/atls"
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"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
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"github.com/edgelesssys/constellation/v2/internal/config"
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"github.com/edgelesssys/constellation/v2/internal/constants"
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"github.com/edgelesssys/constellation/v2/internal/crypto"
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"github.com/edgelesssys/constellation/v2/internal/crypto/testvector"
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"github.com/edgelesssys/constellation/v2/internal/file"
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"github.com/edgelesssys/constellation/v2/internal/grpc/atlscredentials"
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"github.com/edgelesssys/constellation/v2/internal/grpc/dialer"
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"github.com/edgelesssys/constellation/v2/internal/grpc/testdialer"
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"github.com/edgelesssys/constellation/v2/internal/kms/uri"
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"github.com/edgelesssys/constellation/v2/internal/logger"
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"github.com/spf13/afero"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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grpcstatus "google.golang.org/grpc/status"
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)
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func TestRecoverCmdArgumentValidation(t *testing.T) {
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testCases := map[string]struct {
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args []string
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wantErr bool
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}{
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"no args": {[]string{}, false},
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"too many arguments": {[]string{"abc"}, true},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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cmd := NewRecoverCmd()
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err := cmd.ValidateArgs(tc.args)
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if tc.wantErr {
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assert.Error(err)
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} else {
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assert.NoError(err)
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}
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})
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}
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}
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func TestRecover(t *testing.T) {
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someErr := errors.New("error")
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unavailableErr := grpcstatus.Error(codes.Unavailable, "unavailable")
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lbErr := grpcstatus.Error(codes.Unavailable, `connection error: desc = "transport: authentication handshake failed: read tcp`)
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testCases := map[string]struct {
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doer *stubDoer
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masterSecret testvector.HKDF
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endpoint string
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successfulCalls int
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skipConfigCreation bool
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wantErr bool
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}{
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"works": {
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doer: &stubDoer{returns: []error{nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 1,
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},
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"missing config": {
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doer: &stubDoer{returns: []error{nil}},
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endpoint: "192.0.2.89",
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masterSecret: testvector.HKDFZero,
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skipConfigCreation: true,
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wantErr: true,
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},
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"success multiple nodes": {
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doer: &stubDoer{returns: []error{nil, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 2,
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},
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"no nodes to recover does not error": {
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doer: &stubDoer{returns: []error{unavailableErr}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 0,
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},
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"error on first node": {
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doer: &stubDoer{returns: []error{someErr, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 0,
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wantErr: true,
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},
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"unavailable error is retried once": {
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doer: &stubDoer{returns: []error{unavailableErr, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 1,
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},
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"unavailable error is not retried twice": {
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doer: &stubDoer{returns: []error{unavailableErr, unavailableErr, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 0,
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},
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"unavailable error is not retried twice after success": {
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doer: &stubDoer{returns: []error{nil, unavailableErr, unavailableErr, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 1,
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},
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"transient LB errors are retried": {
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doer: &stubDoer{returns: []error{lbErr, lbErr, lbErr, nil}},
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endpoint: "192.0.2.90",
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masterSecret: testvector.HKDFZero,
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successfulCalls: 1,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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require := require.New(t)
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cmd := NewRecoverCmd()
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cmd.SetContext(context.Background())
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out := &bytes.Buffer{}
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cmd.SetOut(out)
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cmd.SetErr(out)
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fs := afero.NewMemMapFs()
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fileHandler := file.NewHandler(fs)
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if !tc.skipConfigCreation {
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config := defaultConfigWithExpectedMeasurements(t, config.Default(), cloudprovider.GCP)
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require.NoError(fileHandler.WriteYAML(constants.ConfigFilename, config))
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}
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require.NoError(fileHandler.WriteJSON(
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constants.MasterSecretFilename,
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uri.MasterSecret{Key: tc.masterSecret.Secret, Salt: tc.masterSecret.Salt},
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file.OptNone,
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))
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require.NoError(fileHandler.WriteYAML(
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constants.StateFilename,
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state.New(),
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file.OptNone,
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))
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newDialer := func(atls.Validator) *dialer.Dialer { return nil }
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r := &recoverCmd{
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log: logger.NewTest(t),
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configFetcher: stubAttestationFetcher{},
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flags: recoverFlags{
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rootFlags: rootFlags{force: true},
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endpoint: tc.endpoint,
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},
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}
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err := r.recover(cmd, fileHandler, time.Millisecond, tc.doer, newDialer)
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if tc.wantErr {
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assert.Error(err)
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if tc.successfulCalls > 0 {
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assert.Contains(out.String(), strconv.Itoa(tc.successfulCalls))
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}
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return
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}
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assert.NoError(err)
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if tc.successfulCalls > 0 {
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assert.Contains(out.String(), "Pushed recovery key.")
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assert.Contains(out.String(), strconv.Itoa(tc.successfulCalls))
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} else {
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assert.Contains(out.String(), "No control-plane nodes in need of recovery found.")
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}
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})
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}
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}
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func TestDoRecovery(t *testing.T) {
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testCases := map[string]struct {
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recoveryServer *stubRecoveryServer
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wantErr bool
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}{
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"success": {
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recoveryServer: &stubRecoveryServer{},
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},
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"server responds with error": {
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recoveryServer: &stubRecoveryServer{recoverError: errors.New("someErr")},
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wantErr: true,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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netDialer := testdialer.NewBufconnDialer()
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serverCreds := atlscredentials.New(nil, nil)
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recoverServer := grpc.NewServer(grpc.Creds(serverCreds))
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recoverproto.RegisterAPIServer(recoverServer, tc.recoveryServer)
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addr := net.JoinHostPort("192.0.42.42", strconv.Itoa(constants.RecoveryPort))
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listener := netDialer.GetListener(addr)
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go recoverServer.Serve(listener)
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defer recoverServer.GracefulStop()
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r := &recoverCmd{log: logger.NewTest(t)}
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recoverDoer := &recoverDoer{
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dialer: dialer.New(nil, nil, netDialer),
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endpoint: addr,
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log: r.log,
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}
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err := recoverDoer.Do(context.Background())
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if tc.wantErr {
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assert.Error(err)
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} else {
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assert.NoError(err)
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}
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})
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}
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}
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func TestDeriveStateDiskKey(t *testing.T) {
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testCases := map[string]struct {
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masterSecret testvector.HKDF
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}{
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"all zero": {
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masterSecret: testvector.HKDFZero,
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},
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"all 0xff": {
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masterSecret: testvector.HKDF0xFF,
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},
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}
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for name, tc := range testCases {
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t.Run(name, func(t *testing.T) {
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assert := assert.New(t)
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getKeyFunc := getStateDiskKeyFunc(tc.masterSecret.Secret, tc.masterSecret.Salt)
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stateDiskKey, err := getKeyFunc(tc.masterSecret.Info)
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assert.NoError(err)
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assert.Equal(tc.masterSecret.Output, stateDiskKey)
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})
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}
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}
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func getStateDiskKeyFunc(masterKey, salt []byte) func(uuid string) ([]byte, error) {
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return func(uuid string) ([]byte, error) {
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return crypto.DeriveKey(masterKey, salt, []byte(crypto.DEKPrefix+uuid), crypto.StateDiskKeyLength)
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}
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}
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type stubRecoveryServer struct {
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recoverError error
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recoverproto.UnimplementedAPIServer
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}
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func (s *stubRecoveryServer) Recover(context.Context, *recoverproto.RecoverMessage) (*recoverproto.RecoverResponse, error) {
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if s.recoverError != nil {
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return nil, s.recoverError
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}
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return &recoverproto.RecoverResponse{}, nil
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}
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type stubDoer struct {
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returns []error
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}
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func (d *stubDoer) Do(context.Context) error {
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err := d.returns[0]
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if len(d.returns) > 1 {
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d.returns = d.returns[1:]
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} else {
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d.returns = []error{grpcstatus.Error(codes.Unavailable, "unavailable")}
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}
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return err
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}
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func (d *stubDoer) setDialer(grpcDialer, string) {}
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func (d *stubDoer) setURIs(_, _ string) {}
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