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config: support latest as version value for Azure SEVSNP (#1786)

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* support latest as version value
This commit is contained in:
Adrian Stobbe 2023-05-23 08:55:49 +01:00 committed by GitHub
parent b86b52a598
commit cfef384f36
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 419 additions and 295 deletions
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3
internal/config/BUILD.bazel
View File

@ -5,9 +5,11 @@ go_library(
name = "config",
srcs = [
"attestation.go",
"azure.go",
"config.go",
"config_doc.go",
"image.go",
"qemu.go",
"validation.go",
],
importpath = "github.com/edgelesssys/constellation/v2/internal/config",
@ -19,6 +21,7 @@ go_library(
"//internal/compatibility",
"//internal/config/imageversion",
"//internal/config/instancetypes",
"//internal/config/snpversion",
"//internal/constants",
"//internal/file",
"//internal/variant",

228
internal/config/azure.go Normal file
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@ -0,0 +1,228 @@
/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package config
import (
"bytes"
"fmt"
"strconv"
"strings"
"github.com/edgelesssys/constellation/v2/internal/attestation/idkeydigest"
"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
"github.com/edgelesssys/constellation/v2/internal/config/snpversion"
"github.com/edgelesssys/constellation/v2/internal/variant"
)
// AzureSEVSNP is the configuration for Azure SEV-SNP attestation.
type AzureSEVSNP struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
// description: |
// Lowest acceptable bootloader version.
BootloaderVersion uint8 `json:"bootloaderVersion" yaml:"bootloaderVersion"`
// description: |
// Lowest acceptable TEE version.
TEEVersion uint8 `json:"teeVersion" yaml:"teeVersion"`
// description: |
// Lowest acceptable SEV-SNP version.
SNPVersion uint8 `json:"snpVersion" yaml:"snpVersion"`
// description: |
// Lowest acceptable microcode version.
MicrocodeVersion uint8 `json:"microcodeVersion" yaml:"microcodeVersion"`
// description: |
// Configuration for validating the firmware signature.
FirmwareSignerConfig SNPFirmwareSignerConfig `json:"firmwareSignerConfig" yaml:"firmwareSignerConfig"`
// description: |
// AMD Root Key certificate used to verify the SEV-SNP certificate chain.
AMDRootKey Certificate `json:"amdRootKey" yaml:"amdRootKey"`
}
// DefaultForAzureSEVSNP returns the default configuration for Azure SEV-SNP attestation.
// Version numbers are hard coded and should be updated with each new release.
func DefaultForAzureSEVSNP() *AzureSEVSNP {
return &AzureSEVSNP{
Measurements: measurements.DefaultsFor(cloudprovider.Azure, variant.AzureSEVSNP{}),
BootloaderVersion: snpversion.GetLatest(snpversion.Bootloader),
TEEVersion: snpversion.GetLatest(snpversion.TEE),
SNPVersion: snpversion.GetLatest(snpversion.SNP),
MicrocodeVersion: snpversion.GetLatest(snpversion.Microcode),
FirmwareSignerConfig: SNPFirmwareSignerConfig{
AcceptedKeyDigests: idkeydigest.DefaultList(),
EnforcementPolicy: idkeydigest.MAAFallback,
},
// AMD root key. Received from the AMD Key Distribution System API (KDS).
AMDRootKey: mustParsePEM(`-----BEGIN CERTIFICATE-----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\nAFZEAwoKCQ==\n-----END CERTIFICATE-----\n`),
}
}
// GetVariant returns azure-sev-snp as the variant.
func (AzureSEVSNP) GetVariant() variant.Variant {
return variant.AzureSEVSNP{}
}
// GetMeasurements returns the measurements used for attestation.
func (c AzureSEVSNP) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *AzureSEVSNP) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c AzureSEVSNP) EqualTo(old AttestationCfg) (bool, error) {
otherCfg, ok := old.(*AzureSEVSNP)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, old)
}
firmwareSignerCfgEqual := c.FirmwareSignerConfig.EqualTo(otherCfg.FirmwareSignerConfig)
measurementsEqual := c.Measurements.EqualTo(otherCfg.Measurements)
bootloaderEqual := c.BootloaderVersion == otherCfg.BootloaderVersion
teeEqual := c.TEEVersion == otherCfg.TEEVersion
snpEqual := c.SNPVersion == otherCfg.SNPVersion
microcodeEqual := c.MicrocodeVersion == otherCfg.MicrocodeVersion
rootKeyEqual := bytes.Equal(c.AMDRootKey.Raw, otherCfg.AMDRootKey.Raw)
return firmwareSignerCfgEqual && measurementsEqual && bootloaderEqual && teeEqual && snpEqual && microcodeEqual && rootKeyEqual, nil
}
// UnmarshalYAML implements a custom unmarshaler to support setting "latest" as version.
func (c *AzureSEVSNP) UnmarshalYAML(unmarshal func(any) error) error {
aux := &fusedAzureSEVSNP{
auxAzureSEVSNP: (*auxAzureSEVSNP)(c),
}
if err := unmarshal(aux); err != nil {
return fmt.Errorf("unmarshal AzureSEVSNP: %w", err)
}
c = (*AzureSEVSNP)(aux.auxAzureSEVSNP)
for _, versionType := range []snpversion.Type{snpversion.Bootloader, snpversion.TEE, snpversion.SNP, snpversion.Microcode} {
if !convertLatestToNumber(c, versionType, aux) {
if err := convertStringToUint(c, versionType, aux); err != nil {
return fmt.Errorf("convert %s version to number: %w", versionType, err)
}
}
}
return nil
}
// AzureTrustedLaunch is the configuration for Azure Trusted Launch attestation.
type AzureTrustedLaunch struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns azure-trusted-launch as the variant.
func (AzureTrustedLaunch) GetVariant() variant.Variant {
return variant.AzureTrustedLaunch{}
}
// GetMeasurements returns the measurements used for attestation.
func (c AzureTrustedLaunch) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *AzureTrustedLaunch) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c AzureTrustedLaunch) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*AzureTrustedLaunch)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// auxAzureSEVSNP is a helper struct for unmarshaling the config from YAML for handling the version parsing.
// The version fields are kept to make it convertable to the native AzureSEVSNP struct.
type auxAzureSEVSNP struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
// description: |
// Lowest acceptable bootloader version.
BootloaderVersion uint8 `yaml:"-"`
// description: |
// Lowest acceptable TEE version.
TEEVersion uint8 `json:"teeVersion" yaml:"-"`
// description: |
// Lowest acceptable SEV-SNP version.
SNPVersion uint8 `json:"snpVersion" yaml:"-"`
// description: |
// Lowest acceptable microcode version.
MicrocodeVersion uint8 `json:"microcodeVersion" yaml:"-"`
// description: |
// Configuration for validating the firmware signature.
FirmwareSignerConfig SNPFirmwareSignerConfig `json:"firmwareSignerConfig" yaml:"firmwareSignerConfig"`
// description: |
// AMD Root Key certificate used to verify the SEV-SNP certificate chain.
AMDRootKey Certificate `json:"amdRootKey" yaml:"amdRootKey"`
}
// fusedAzureSEVSNP is a helper struct for unmarshaling the config from YAML for handling the version parsing.
type fusedAzureSEVSNP struct {
*auxAzureSEVSNP `yaml:",inline"`
// description: |
// Lowest acceptable bootloader version.
BootloaderVersion string `yaml:"bootloaderVersion"`
// description: |
// Lowest acceptable bootloader version.
TEEVersion string `yaml:"teeVersion"`
// description: |
// Lowest acceptable bootloader version.
SNPVersion string `yaml:"snpVersion"`
// description: |
// Lowest acceptable bootloader version.
MicrocodeVersion string `yaml:"microcodeVersion"`
}
func convertStringToUint(c *AzureSEVSNP, versionType snpversion.Type, aux *fusedAzureSEVSNP) error {
v, stringV := getUintAndStringPtrToVersion(c, versionType, aux)
bvInt, err := strconv.ParseInt(*stringV, 10, 8)
if err != nil {
return err
}
*v = uint8(bvInt)
return nil
}
func convertLatestToNumber(c *AzureSEVSNP, versionType snpversion.Type, aux *fusedAzureSEVSNP) bool {
v, stringV := getUintAndStringPtrToVersion(c, versionType, aux)
if strings.ToLower(*stringV) == "latest" {
*v = snpversion.GetLatest(versionType)
return true
}
return false
}
func getUintAndStringPtrToVersion(c *AzureSEVSNP, versionType snpversion.Type, aux *fusedAzureSEVSNP) (versionUint *uint8, versionString *string) {
switch versionType {
case snpversion.Bootloader:
versionUint = &c.BootloaderVersion
versionString = &aux.BootloaderVersion
case snpversion.TEE:
versionUint = &c.TEEVersion
versionString = &aux.TEEVersion
case snpversion.SNP:
versionUint = &c.SNPVersion
versionString = &aux.SNPVersion
case snpversion.Microcode:
versionUint = &c.MicrocodeVersion
versionString = &aux.MicrocodeVersion
}
return
}

171
internal/config/config.go
View File

@ -19,7 +19,6 @@ All config relevant definitions, parsing and validation functions should go here
package config
import (
"bytes"
"errors"
"fmt"
"io/fs"
@ -725,83 +724,6 @@ func (c AWSNitroTPM) EqualTo(other AttestationCfg) (bool, error) {
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// AzureSEVSNP is the configuration for Azure SEV-SNP attestation.
type AzureSEVSNP struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
// description: |
// Lowest acceptable bootloader version.
BootloaderVersion uint8 `json:"bootloaderVersion" yaml:"bootloaderVersion"`
// description: |
// Lowest acceptable TEE version.
TEEVersion uint8 `json:"teeVersion" yaml:"teeVersion"`
// description: |
// Lowest acceptable SEV-SNP version.
SNPVersion uint8 `json:"snpVersion" yaml:"snpVersion"`
// description: |
// Lowest acceptable microcode version.
MicrocodeVersion uint8 `json:"microcodeVersion" yaml:"microcodeVersion"`
// description: |
// Configuration for validating the firmware signature.
FirmwareSignerConfig SNPFirmwareSignerConfig `json:"firmwareSignerConfig" yaml:"firmwareSignerConfig"`
// description: |
// AMD Root Key certificate used to verify the SEV-SNP certificate chain.
AMDRootKey Certificate `json:"amdRootKey" yaml:"amdRootKey"`
}
// DefaultForAzureSEVSNP returns the default configuration for Azure SEV-SNP attestation.
// Version numbers are hard coded and should be updated with each new release.
// TODO(AB#3042): replace with dynamic lookup for configurable values.
func DefaultForAzureSEVSNP() *AzureSEVSNP {
return &AzureSEVSNP{
Measurements: measurements.DefaultsFor(cloudprovider.Azure, variant.AzureSEVSNP{}),
BootloaderVersion: 2,
TEEVersion: 0,
SNPVersion: 6,
MicrocodeVersion: 93,
FirmwareSignerConfig: SNPFirmwareSignerConfig{
AcceptedKeyDigests: idkeydigest.DefaultList(),
EnforcementPolicy: idkeydigest.MAAFallback,
},
// AMD root key. Received from the AMD Key Distribution System API (KDS).
AMDRootKey: mustParsePEM(`-----BEGIN CERTIFICATE-----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\nAFZEAwoKCQ==\n-----END CERTIFICATE-----\n`),
}
}
// GetVariant returns azure-sev-snp as the variant.
func (AzureSEVSNP) GetVariant() variant.Variant {
return variant.AzureSEVSNP{}
}
// GetMeasurements returns the measurements used for attestation.
func (c AzureSEVSNP) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *AzureSEVSNP) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c AzureSEVSNP) EqualTo(old AttestationCfg) (bool, error) {
otherCfg, ok := old.(*AzureSEVSNP)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, old)
}
firmwareSignerCfgEqual := c.FirmwareSignerConfig.EqualTo(otherCfg.FirmwareSignerConfig)
measurementsEqual := c.Measurements.EqualTo(otherCfg.Measurements)
bootloaderEqual := c.BootloaderVersion == otherCfg.BootloaderVersion
teeEqual := c.TEEVersion == otherCfg.TEEVersion
snpEqual := c.SNPVersion == otherCfg.SNPVersion
microcodeEqual := c.MicrocodeVersion == otherCfg.MicrocodeVersion
rootKeyEqual := bytes.Equal(c.AMDRootKey.Raw, otherCfg.AMDRootKey.Raw)
return firmwareSignerCfgEqual && measurementsEqual && bootloaderEqual && teeEqual && snpEqual && microcodeEqual && rootKeyEqual, nil
}
// SNPFirmwareSignerConfig is the configuration for validating the firmware signer.
type SNPFirmwareSignerConfig struct {
// description: |
@ -820,37 +742,6 @@ func (c SNPFirmwareSignerConfig) EqualTo(other SNPFirmwareSignerConfig) bool {
return c.AcceptedKeyDigests.EqualTo(other.AcceptedKeyDigests) && c.EnforcementPolicy == other.EnforcementPolicy && c.MAAURL == other.MAAURL
}
// AzureTrustedLaunch is the configuration for Azure Trusted Launch attestation.
type AzureTrustedLaunch struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns azure-trusted-launch as the variant.
func (AzureTrustedLaunch) GetVariant() variant.Variant {
return variant.AzureTrustedLaunch{}
}
// GetMeasurements returns the measurements used for attestation.
func (c AzureTrustedLaunch) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *AzureTrustedLaunch) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c AzureTrustedLaunch) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*AzureTrustedLaunch)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// GCPSEVES is the configuration for GCP SEV-ES attestation.
type GCPSEVES struct {
// description: |
@ -882,68 +773,6 @@ func (c GCPSEVES) EqualTo(other AttestationCfg) (bool, error) {
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// QEMUVTPM is the configuration for QEMU vTPM attestation.
type QEMUVTPM struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns qemu-vtpm as the variant.
func (QEMUVTPM) GetVariant() variant.Variant {
return variant.QEMUVTPM{}
}
// GetMeasurements returns the measurements used for attestation.
func (c QEMUVTPM) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *QEMUVTPM) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c QEMUVTPM) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*QEMUVTPM)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// QEMUTDX is the configuration for QEMU TDX attestation.
type QEMUTDX struct {
// description: |
// Expected TDX measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns qemu-tdx as the variant.
func (QEMUTDX) GetVariant() variant.Variant {
return variant.QEMUTDX{}
}
// GetMeasurements returns the measurements used for attestation.
func (c QEMUTDX) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *QEMUTDX) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c QEMUTDX) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*QEMUTDX)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
func toPtr[T any](v T) *T {
return &v
}

124
internal/config/config_doc.go
View File

@ -20,12 +20,8 @@ var (
QEMUConfigDoc encoder.Doc
AttestationConfigDoc encoder.Doc
AWSNitroTPMDoc encoder.Doc
AzureSEVSNPDoc encoder.Doc
SNPFirmwareSignerConfigDoc encoder.Doc
AzureTrustedLaunchDoc encoder.Doc
GCPSEVESDoc encoder.Doc
QEMUVTPMDoc encoder.Doc
QEMUTDXDoc encoder.Doc
)
func init() {
@ -477,61 +473,9 @@ func init() {
AWSNitroTPMDoc.Fields[0].Description = "Expected TPM measurements."
AWSNitroTPMDoc.Fields[0].Comments[encoder.LineComment] = "Expected TPM measurements."
AzureSEVSNPDoc.Type = "AzureSEVSNP"
AzureSEVSNPDoc.Comments[encoder.LineComment] = "AzureSEVSNP is the configuration for Azure SEV-SNP attestation."
AzureSEVSNPDoc.Description = "AzureSEVSNP is the configuration for Azure SEV-SNP attestation."
AzureSEVSNPDoc.AppearsIn = []encoder.Appearance{
{
TypeName: "AttestationConfig",
FieldName: "azureSEVSNP",
},
}
AzureSEVSNPDoc.Fields = make([]encoder.Doc, 7)
AzureSEVSNPDoc.Fields[0].Name = "measurements"
AzureSEVSNPDoc.Fields[0].Type = "M"
AzureSEVSNPDoc.Fields[0].Note = ""
AzureSEVSNPDoc.Fields[0].Description = "Expected TPM measurements."
AzureSEVSNPDoc.Fields[0].Comments[encoder.LineComment] = "Expected TPM measurements."
AzureSEVSNPDoc.Fields[1].Name = "bootloaderVersion"
AzureSEVSNPDoc.Fields[1].Type = "uint8"
AzureSEVSNPDoc.Fields[1].Note = ""
AzureSEVSNPDoc.Fields[1].Description = "Lowest acceptable bootloader version."
AzureSEVSNPDoc.Fields[1].Comments[encoder.LineComment] = "Lowest acceptable bootloader version."
AzureSEVSNPDoc.Fields[2].Name = "teeVersion"
AzureSEVSNPDoc.Fields[2].Type = "uint8"
AzureSEVSNPDoc.Fields[2].Note = ""
AzureSEVSNPDoc.Fields[2].Description = "Lowest acceptable TEE version."
AzureSEVSNPDoc.Fields[2].Comments[encoder.LineComment] = "Lowest acceptable TEE version."
AzureSEVSNPDoc.Fields[3].Name = "snpVersion"
AzureSEVSNPDoc.Fields[3].Type = "uint8"
AzureSEVSNPDoc.Fields[3].Note = ""
AzureSEVSNPDoc.Fields[3].Description = "Lowest acceptable SEV-SNP version."
AzureSEVSNPDoc.Fields[3].Comments[encoder.LineComment] = "Lowest acceptable SEV-SNP version."
AzureSEVSNPDoc.Fields[4].Name = "microcodeVersion"
AzureSEVSNPDoc.Fields[4].Type = "uint8"
AzureSEVSNPDoc.Fields[4].Note = ""
AzureSEVSNPDoc.Fields[4].Description = "Lowest acceptable microcode version."
AzureSEVSNPDoc.Fields[4].Comments[encoder.LineComment] = "Lowest acceptable microcode version."
AzureSEVSNPDoc.Fields[5].Name = "firmwareSignerConfig"
AzureSEVSNPDoc.Fields[5].Type = "SNPFirmwareSignerConfig"
AzureSEVSNPDoc.Fields[5].Note = ""
AzureSEVSNPDoc.Fields[5].Description = "Configuration for validating the firmware signature."
AzureSEVSNPDoc.Fields[5].Comments[encoder.LineComment] = "Configuration for validating the firmware signature."
AzureSEVSNPDoc.Fields[6].Name = "amdRootKey"
AzureSEVSNPDoc.Fields[6].Type = "Certificate"
AzureSEVSNPDoc.Fields[6].Note = ""
AzureSEVSNPDoc.Fields[6].Description = "AMD Root Key certificate used to verify the SEV-SNP certificate chain."
AzureSEVSNPDoc.Fields[6].Comments[encoder.LineComment] = "AMD Root Key certificate used to verify the SEV-SNP certificate chain."
SNPFirmwareSignerConfigDoc.Type = "SNPFirmwareSignerConfig"
SNPFirmwareSignerConfigDoc.Comments[encoder.LineComment] = "SNPFirmwareSignerConfig is the configuration for validating the firmware signer."
SNPFirmwareSignerConfigDoc.Description = "SNPFirmwareSignerConfig is the configuration for validating the firmware signer."
SNPFirmwareSignerConfigDoc.AppearsIn = []encoder.Appearance{
{
TypeName: "AzureSEVSNP",
FieldName: "firmwareSignerConfig",
},
}
SNPFirmwareSignerConfigDoc.Fields = make([]encoder.Doc, 3)
SNPFirmwareSignerConfigDoc.Fields[0].Name = "acceptedKeyDigests"
SNPFirmwareSignerConfigDoc.Fields[0].Type = "List"
@ -549,22 +493,6 @@ func init() {
SNPFirmwareSignerConfigDoc.Fields[2].Description = "URL of the Microsoft Azure Attestation (MAA) instance to use for fallback validation. Only used if 'enforcementPolicy' is set to 'maaFallback'."
SNPFirmwareSignerConfigDoc.Fields[2].Comments[encoder.LineComment] = "URL of the Microsoft Azure Attestation (MAA) instance to use for fallback validation. Only used if 'enforcementPolicy' is set to 'maaFallback'."
AzureTrustedLaunchDoc.Type = "AzureTrustedLaunch"
AzureTrustedLaunchDoc.Comments[encoder.LineComment] = "AzureTrustedLaunch is the configuration for Azure Trusted Launch attestation."
AzureTrustedLaunchDoc.Description = "AzureTrustedLaunch is the configuration for Azure Trusted Launch attestation."
AzureTrustedLaunchDoc.AppearsIn = []encoder.Appearance{
{
TypeName: "AttestationConfig",
FieldName: "azureTrustedLaunch",
},
}
AzureTrustedLaunchDoc.Fields = make([]encoder.Doc, 1)
AzureTrustedLaunchDoc.Fields[0].Name = "measurements"
AzureTrustedLaunchDoc.Fields[0].Type = "M"
AzureTrustedLaunchDoc.Fields[0].Note = ""
AzureTrustedLaunchDoc.Fields[0].Description = "Expected TPM measurements."
AzureTrustedLaunchDoc.Fields[0].Comments[encoder.LineComment] = "Expected TPM measurements."
GCPSEVESDoc.Type = "GCPSEVES"
GCPSEVESDoc.Comments[encoder.LineComment] = "GCPSEVES is the configuration for GCP SEV-ES attestation."
GCPSEVESDoc.Description = "GCPSEVES is the configuration for GCP SEV-ES attestation."
@ -580,38 +508,6 @@ func init() {
GCPSEVESDoc.Fields[0].Note = ""
GCPSEVESDoc.Fields[0].Description = "Expected TPM measurements."
GCPSEVESDoc.Fields[0].Comments[encoder.LineComment] = "Expected TPM measurements."
QEMUVTPMDoc.Type = "QEMUVTPM"
QEMUVTPMDoc.Comments[encoder.LineComment] = "QEMUVTPM is the configuration for QEMU vTPM attestation."
QEMUVTPMDoc.Description = "QEMUVTPM is the configuration for QEMU vTPM attestation."
QEMUVTPMDoc.AppearsIn = []encoder.Appearance{
{
TypeName: "AttestationConfig",
FieldName: "qemuVTPM",
},
}
QEMUVTPMDoc.Fields = make([]encoder.Doc, 1)
QEMUVTPMDoc.Fields[0].Name = "measurements"
QEMUVTPMDoc.Fields[0].Type = "M"
QEMUVTPMDoc.Fields[0].Note = ""
QEMUVTPMDoc.Fields[0].Description = "Expected TPM measurements."
QEMUVTPMDoc.Fields[0].Comments[encoder.LineComment] = "Expected TPM measurements."
QEMUTDXDoc.Type = "QEMUTDX"
QEMUTDXDoc.Comments[encoder.LineComment] = "QEMUTDX is the configuration for QEMU TDX attestation."
QEMUTDXDoc.Description = "QEMUTDX is the configuration for QEMU TDX attestation."
QEMUTDXDoc.AppearsIn = []encoder.Appearance{
{
TypeName: "AttestationConfig",
FieldName: "qemuTDX",
},
}
QEMUTDXDoc.Fields = make([]encoder.Doc, 1)
QEMUTDXDoc.Fields[0].Name = "measurements"
QEMUTDXDoc.Fields[0].Type = "M"
QEMUTDXDoc.Fields[0].Note = ""
QEMUTDXDoc.Fields[0].Description = "Expected TDX measurements."
QEMUTDXDoc.Fields[0].Comments[encoder.LineComment] = "Expected TDX measurements."
}
func (_ Config) Doc() *encoder.Doc {
@ -650,30 +546,14 @@ func (_ AWSNitroTPM) Doc() *encoder.Doc {
return &AWSNitroTPMDoc
}
func (_ AzureSEVSNP) Doc() *encoder.Doc {
return &AzureSEVSNPDoc
}
func (_ SNPFirmwareSignerConfig) Doc() *encoder.Doc {
return &SNPFirmwareSignerConfigDoc
}
func (_ AzureTrustedLaunch) Doc() *encoder.Doc {
return &AzureTrustedLaunchDoc
}
func (_ GCPSEVES) Doc() *encoder.Doc {
return &GCPSEVESDoc
}
func (_ QEMUVTPM) Doc() *encoder.Doc {
return &QEMUVTPMDoc
}
func (_ QEMUTDX) Doc() *encoder.Doc {
return &QEMUTDXDoc
}
// GetConfigurationDoc returns documentation for the file ./config_doc.go.
func GetConfigurationDoc() *encoder.FileDoc {
return &encoder.FileDoc{
@ -689,12 +569,8 @@ func GetConfigurationDoc() *encoder.FileDoc {
&QEMUConfigDoc,
&AttestationConfigDoc,
&AWSNitroTPMDoc,
&AzureSEVSNPDoc,
&SNPFirmwareSignerConfigDoc,
&AzureTrustedLaunchDoc,
&GCPSEVESDoc,
&QEMUVTPMDoc,
&QEMUTDXDoc,
},
}
}

71
internal/config/config_test.go
View File

@ -18,6 +18,7 @@ import (
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.uber.org/goleak"
"gopkg.in/yaml.v3"
"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
@ -36,6 +37,76 @@ func TestDefaultConfig(t *testing.T) {
assert.NotNil(def)
}
func TestSettingLatestAsVersion(t *testing.T) {
testCases := map[string]struct {
config map[string]interface{}
configName string
wantResult *Config
wantErr bool
}{
"mix of latest and uint as version value": {
config: func() map[string]interface{} {
conf := Default()
// modify versions as string
m := getConfigAsMap(conf, t)
m["attestation"].(map[string]interface{})["azureSEVSNP"].(map[string]interface{})["microcodeVersion"] = "latest"
m["attestation"].(map[string]interface{})["azureSEVSNP"].(map[string]interface{})["teeVersion"] = "latest"
m["attestation"].(map[string]interface{})["azureSEVSNP"].(map[string]interface{})["snpVersion"] = "latest"
m["attestation"].(map[string]interface{})["azureSEVSNP"].(map[string]interface{})["bootloaderVersion"] = 1
return m
}(),
configName: constants.ConfigFilename,
wantResult: func() *Config {
conf := Default()
conf.Attestation.AzureSEVSNP.BootloaderVersion = 1
return conf
}(),
},
"refuse invalid version value": {
config: func() map[string]interface{} {
conf := Default()
m := getConfigAsMap(conf, t)
m["attestation"].(map[string]interface{})["azureSEVSNP"].(map[string]interface{})["microcodeVersion"] = "1a"
return m
}(),
configName: constants.ConfigFilename,
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(afero.NewMemMapFs())
if tc.config != nil {
require.NoError(fileHandler.WriteYAML(tc.configName, tc.config, file.OptNone))
}
result, err := fromFile(fileHandler, tc.configName)
if tc.wantErr {
assert.Error(err)
} else {
require.NoError(err)
assert.Equal(tc.wantResult, result)
}
})
}
}
// getConfigAsMap returns a map of the config.
func getConfigAsMap(conf *Config, t *testing.T) (res map[string]interface{}) {
bytes, err := yaml.Marshal(&conf)
if err != nil {
t.Fatal(err)
}
if err := yaml.Unmarshal(bytes, &res); err != nil {
t.Fatal(err)
}
return
}
func TestFromFile(t *testing.T) {
testCases := map[string]struct {
config *Config

76
internal/config/qemu.go Normal file
View File

@ -0,0 +1,76 @@
/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package config
import (
"fmt"
"github.com/edgelesssys/constellation/v2/internal/attestation/measurements"
"github.com/edgelesssys/constellation/v2/internal/variant"
)
// QEMUVTPM is the configuration for QEMU vTPM attestation.
type QEMUVTPM struct {
// description: |
// Expected TPM measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns qemu-vtpm as the variant.
func (QEMUVTPM) GetVariant() variant.Variant {
return variant.QEMUVTPM{}
}
// GetMeasurements returns the measurements used for attestation.
func (c QEMUVTPM) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *QEMUVTPM) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c QEMUVTPM) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*QEMUVTPM)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}
// QEMUTDX is the configuration for QEMU TDX attestation.
type QEMUTDX struct {
// description: |
// Expected TDX measurements.
Measurements measurements.M `json:"measurements" yaml:"measurements" validate:"required,no_placeholders"`
}
// GetVariant returns qemu-tdx as the variant.
func (QEMUTDX) GetVariant() variant.Variant {
return variant.QEMUTDX{}
}
// GetMeasurements returns the measurements used for attestation.
func (c QEMUTDX) GetMeasurements() measurements.M {
return c.Measurements
}
// SetMeasurements updates a config's measurements using the given measurements.
func (c *QEMUTDX) SetMeasurements(m measurements.M) {
c.Measurements = m
}
// EqualTo returns true if the config is equal to the given config.
func (c QEMUTDX) EqualTo(other AttestationCfg) (bool, error) {
otherCfg, ok := other.(*QEMUTDX)
if !ok {
return false, fmt.Errorf("cannot compare %T with %T", c, other)
}
return c.Measurements.EqualTo(otherCfg.Measurements), nil
}

8
internal/config/snpversion/BUILD.bazel Normal file
View File

@ -0,0 +1,8 @@
load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "snpversion",
srcs = ["snpversion.go"],
importpath = "github.com/edgelesssys/constellation/v2/internal/config/snpversion",
visibility = ["//:__subpackages__"],
)

33
internal/config/snpversion/snpversion.go Normal file
View File

@ -0,0 +1,33 @@
/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package snpversion
const (
Bootloader Type = "bootloader" // Bootloader is the version of the Azure SEVSNP bootloader.
TEE Type = "tee" // TEE is the version of the Azure SEVSNP TEE.
SNP Type = "snp" // SNP is the version of the Azure SEVSNP SNP.
Microcode Type = "microcode" // Microcode is the version of the Azure SEVSNP microcode.
)
// Type is the type of the version to be requested.
type Type string
// GetLatest returns the version of the given type.
func GetLatest(t Type) uint8 {
switch t {
case Bootloader:
return 2
case TEE:
return 0
case SNP:
return 6
case Microcode:
return 93
default:
panic("invalid version type")
}
}