mirror of
https://github.com/edgelesssys/constellation.git
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ba4471a228
* Add warnings for non enforced, untrusted PCRs * Fix global state in Config PCR map Signed-off-by: Daniel Weiße <dw@edgeless.systems>
362 lines
8.3 KiB
Go
362 lines
8.3 KiB
Go
package cloudcmd
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import (
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"crypto/sha256"
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"encoding/base64"
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"testing"
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"github.com/edgelesssys/constellation/internal/atls"
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"github.com/edgelesssys/constellation/internal/attestation/azure"
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"github.com/edgelesssys/constellation/internal/attestation/gcp"
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"github.com/edgelesssys/constellation/internal/attestation/qemu"
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"github.com/edgelesssys/constellation/internal/attestation/vtpm"
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"github.com/edgelesssys/constellation/internal/cloud/cloudprovider"
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"github.com/edgelesssys/constellation/internal/config"
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"github.com/spf13/cobra"
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"github.com/stretchr/testify/assert"
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)
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func TestNewValidator(t *testing.T) {
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zero := []byte("00000000000000000000000000000000")
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one := []byte("11111111111111111111111111111111")
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testPCRs := map[uint32][]byte{
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0: zero,
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1: one,
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2: zero,
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3: one,
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4: zero,
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5: zero,
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}
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testCases := map[string]struct {
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provider cloudprovider.Provider
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config *config.Config
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pcrs map[uint32][]byte
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wantErr bool
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}{
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"gcp": {
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provider: cloudprovider.GCP,
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pcrs: testPCRs,
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},
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"azure": {
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provider: cloudprovider.Azure,
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pcrs: testPCRs,
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},
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"qemu": {
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provider: cloudprovider.QEMU,
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pcrs: testPCRs,
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},
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"no pcrs provided": {
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provider: cloudprovider.Azure,
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pcrs: map[uint32][]byte{},
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wantErr: true,
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},
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"invalid pcr length": {
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provider: cloudprovider.GCP,
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pcrs: map[uint32][]byte{0: []byte("0000000000000000000000000000000")},
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wantErr: true,
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},
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"unknown provider": {
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provider: cloudprovider.Unknown,
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pcrs: testPCRs,
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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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conf := &config.Config{Provider: config.ProviderConfig{}}
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if tc.provider == cloudprovider.GCP {
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measurements := config.Measurements(tc.pcrs)
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conf.Provider.GCP = &config.GCPConfig{Measurements: measurements}
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}
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if tc.provider == cloudprovider.Azure {
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measurements := config.Measurements(tc.pcrs)
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conf.Provider.Azure = &config.AzureConfig{Measurements: measurements}
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}
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if tc.provider == cloudprovider.QEMU {
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measurements := config.Measurements(tc.pcrs)
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conf.Provider.QEMU = &config.QEMUConfig{Measurements: measurements}
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}
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validators, err := NewValidator(tc.provider, conf)
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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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assert.Equal(tc.pcrs, validators.pcrs)
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assert.Equal(tc.provider, validators.provider)
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}
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})
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}
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}
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func TestValidatorV(t *testing.T) {
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zero := []byte("00000000000000000000000000000000")
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newTestPCRs := func() map[uint32][]byte {
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return map[uint32][]byte{
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0: zero,
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1: zero,
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2: zero,
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3: zero,
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4: zero,
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5: zero,
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6: zero,
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7: zero,
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8: zero,
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9: zero,
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10: zero,
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11: zero,
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12: zero,
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}
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}
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testCases := map[string]struct {
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provider cloudprovider.Provider
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pcrs map[uint32][]byte
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wantVs atls.Validator
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}{
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"gcp": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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wantVs: gcp.NewValidator(newTestPCRs(), nil),
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},
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"azure": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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wantVs: azure.NewValidator(newTestPCRs(), nil),
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},
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"qemu": {
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provider: cloudprovider.QEMU,
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pcrs: newTestPCRs(),
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wantVs: qemu.NewValidator(newTestPCRs(), nil),
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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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validators := &Validator{provider: tc.provider, pcrs: tc.pcrs}
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resultValidator := validators.V(&cobra.Command{})
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assert.Equal(tc.wantVs.OID(), resultValidator.OID())
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})
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}
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}
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func TestValidatorUpdateInitPCRs(t *testing.T) {
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zero := []byte("00000000000000000000000000000000")
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one := []byte("11111111111111111111111111111111")
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one64 := base64.StdEncoding.EncodeToString(one)
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oneHash := sha256.Sum256(one)
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pcrZeroUpdatedOne := sha256.Sum256(append(zero, oneHash[:]...))
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newTestPCRs := func() map[uint32][]byte {
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return map[uint32][]byte{
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0: zero,
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1: zero,
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2: zero,
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3: zero,
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4: zero,
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5: zero,
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6: zero,
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7: zero,
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8: zero,
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9: zero,
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10: zero,
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11: zero,
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12: zero,
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}
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}
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testCases := map[string]struct {
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provider cloudprovider.Provider
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pcrs map[uint32][]byte
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ownerID string
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clusterID string
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wantErr bool
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}{
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"gcp update owner ID": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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ownerID: one64,
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},
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"gcp update cluster ID": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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clusterID: one64,
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},
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"gcp update both": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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ownerID: one64,
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clusterID: one64,
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},
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"azure update owner ID": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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ownerID: one64,
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},
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"azure update cluster ID": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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clusterID: one64,
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},
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"azure update both": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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ownerID: one64,
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clusterID: one64,
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},
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"owner ID and cluster ID empty": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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},
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"invalid encoding": {
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provider: cloudprovider.GCP,
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pcrs: newTestPCRs(),
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ownerID: "invalid",
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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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validators := &Validator{provider: tc.provider, pcrs: tc.pcrs}
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err := validators.UpdateInitPCRs(tc.ownerID, tc.clusterID)
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if tc.wantErr {
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assert.Error(err)
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return
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}
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assert.NoError(err)
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for i := 0; i < len(tc.pcrs); i++ {
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switch {
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case i == int(vtpm.PCRIndexClusterID) && tc.clusterID == "":
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// should be deleted
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_, ok := validators.pcrs[uint32(i)]
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assert.False(ok)
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case i == int(vtpm.PCRIndexClusterID):
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pcr, ok := validators.pcrs[uint32(i)]
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assert.True(ok)
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assert.Equal(pcrZeroUpdatedOne[:], pcr)
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case i == int(vtpm.PCRIndexOwnerID) && tc.ownerID == "":
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// should be deleted
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_, ok := validators.pcrs[uint32(i)]
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assert.False(ok)
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case i == int(vtpm.PCRIndexOwnerID):
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pcr, ok := validators.pcrs[uint32(i)]
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assert.True(ok)
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assert.Equal(pcrZeroUpdatedOne[:], pcr)
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default:
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assert.Equal(zero, validators.pcrs[uint32(i)])
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}
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}
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})
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}
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}
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func TestUpdatePCR(t *testing.T) {
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emptyMap := map[uint32][]byte{}
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defaultMap := map[uint32][]byte{
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0: []byte("AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"),
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1: []byte("BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"),
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}
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testCases := map[string]struct {
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pcrMap map[uint32][]byte
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pcrIndex uint32
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encoded string
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wantEntries int
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wantErr bool
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}{
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"empty input, empty map": {
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pcrMap: emptyMap,
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pcrIndex: 10,
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encoded: "",
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wantEntries: 0,
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wantErr: false,
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},
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"empty input, default map": {
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pcrMap: defaultMap,
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pcrIndex: 10,
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encoded: "",
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wantEntries: len(defaultMap),
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wantErr: false,
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},
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"correct input, empty map": {
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pcrMap: emptyMap,
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pcrIndex: 10,
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encoded: base64.StdEncoding.EncodeToString([]byte("Constellation")),
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wantEntries: 1,
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wantErr: false,
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},
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"correct input, default map": {
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pcrMap: defaultMap,
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pcrIndex: 10,
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encoded: base64.StdEncoding.EncodeToString([]byte("Constellation")),
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wantEntries: len(defaultMap) + 1,
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wantErr: false,
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},
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"unencoded input, empty map": {
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pcrMap: emptyMap,
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pcrIndex: 10,
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encoded: "Constellation",
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wantEntries: 0,
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wantErr: true,
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},
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"unencoded input, default map": {
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pcrMap: defaultMap,
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pcrIndex: 10,
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encoded: "Constellation",
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wantEntries: len(defaultMap),
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wantErr: true,
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},
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"empty input at occupied index": {
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pcrMap: defaultMap,
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pcrIndex: 0,
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encoded: "",
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wantEntries: len(defaultMap) - 1,
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wantErr: false,
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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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pcrs := make(map[uint32][]byte)
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for k, v := range tc.pcrMap {
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pcrs[k] = v
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}
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validators := &Validator{
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provider: cloudprovider.GCP,
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pcrs: pcrs,
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}
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err := validators.updatePCR(tc.pcrIndex, tc.encoded)
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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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assert.Len(pcrs, tc.wantEntries)
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for _, v := range pcrs {
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assert.Len(v, 32)
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}
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})
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}
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}
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