mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-10-01 01:36:09 -04:00
bb76a4e4c8
* refactor measurements to use consistent types and less byte pushing * refactor: only rely on a single multierr dependency * extend config creation with envar support * document changes Signed-off-by: Fabian Kammel <fk@edgeless.systems>
412 lines
10 KiB
Go
412 lines
10 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 cloudcmd
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import (
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"bytes"
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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/v2/internal/atls"
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"github.com/edgelesssys/constellation/v2/internal/attestation/azure/snp"
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"github.com/edgelesssys/constellation/v2/internal/attestation/azure/trustedlaunch"
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"github.com/edgelesssys/constellation/v2/internal/attestation/gcp"
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"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
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"github.com/edgelesssys/constellation/v2/internal/attestation/qemu"
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"github.com/edgelesssys/constellation/v2/internal/attestation/vtpm"
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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/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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testPCRs := measurements.M{
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0: measurements.PCRWithAllBytes(0x00),
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1: measurements.PCRWithAllBytes(0xFF),
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2: measurements.PCRWithAllBytes(0x00),
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3: measurements.PCRWithAllBytes(0xFF),
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4: measurements.PCRWithAllBytes(0x00),
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5: measurements.PCRWithAllBytes(0x00),
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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 measurements.M
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enforceIDKeyDigest bool
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idKeyDigest string
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azureCVM bool
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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 cvm": {
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provider: cloudprovider.Azure,
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pcrs: testPCRs,
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azureCVM: true,
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},
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"azure trusted launch": {
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provider: cloudprovider.Azure,
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pcrs: testPCRs,
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azureCVM: false,
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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: measurements.M{},
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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: measurements.M{
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0: bytes.Repeat([]byte{0x00}, 31),
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},
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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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"set idkeydigest": {
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provider: cloudprovider.Azure,
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pcrs: testPCRs,
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idKeyDigest: "414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141",
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enforceIDKeyDigest: true,
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},
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"invalid idkeydigest": {
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provider: cloudprovider.Azure,
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pcrs: testPCRs,
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idKeyDigest: "41414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414",
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enforceIDKeyDigest: true,
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azureCVM: true,
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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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conf.Provider.GCP = &config.GCPConfig{Measurements: tc.pcrs}
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}
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if tc.provider == cloudprovider.Azure {
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conf.Provider.Azure = &config.AzureConfig{Measurements: tc.pcrs, EnforceIDKeyDigest: &tc.enforceIDKeyDigest, IDKeyDigest: tc.idKeyDigest, ConfidentialVM: &tc.azureCVM}
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}
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if tc.provider == cloudprovider.QEMU {
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conf.Provider.QEMU = &config.QEMUConfig{Measurements: tc.pcrs}
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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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newTestPCRs := func() measurements.M {
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return measurements.M{
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0: measurements.PCRWithAllBytes(0x00),
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1: measurements.PCRWithAllBytes(0x00),
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2: measurements.PCRWithAllBytes(0x00),
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3: measurements.PCRWithAllBytes(0x00),
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4: measurements.PCRWithAllBytes(0x00),
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5: measurements.PCRWithAllBytes(0x00),
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6: measurements.PCRWithAllBytes(0x00),
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7: measurements.PCRWithAllBytes(0x00),
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8: measurements.PCRWithAllBytes(0x00),
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9: measurements.PCRWithAllBytes(0x00),
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10: measurements.PCRWithAllBytes(0x00),
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11: measurements.PCRWithAllBytes(0x00),
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12: measurements.PCRWithAllBytes(0x00),
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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 measurements.M
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wantVs atls.Validator
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azureCVM bool
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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, nil),
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},
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"azure cvm": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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wantVs: snp.NewValidator(newTestPCRs(), nil, nil, false, nil),
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azureCVM: true,
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},
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"azure trusted launch": {
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provider: cloudprovider.Azure,
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pcrs: newTestPCRs(),
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wantVs: trustedlaunch.NewValidator(newTestPCRs(), nil, 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, 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, azureCVM: tc.azureCVM}
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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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13: zero,
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14: zero,
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15: zero,
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16: zero,
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17: one,
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18: one,
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19: one,
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20: one,
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21: one,
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22: one,
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23: 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 measurements.M
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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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if i >= 17 && i <= 22 {
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assert.Equal(one, validators.pcrs[uint32(i)])
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} else {
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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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}
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func TestUpdatePCR(t *testing.T) {
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emptyMap := measurements.M{}
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defaultMap := measurements.M{
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0: measurements.PCRWithAllBytes(0xAA),
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1: measurements.PCRWithAllBytes(0xBB),
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}
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testCases := map[string]struct {
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pcrMap measurements.M
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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(measurements.M)
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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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