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0a7349ca41
constellation/internal/attestation/measurements/measurements_test.go
Malte Poll 0a7349ca41 attestation: merging of ImageMeasurementsV2
2023-05-25 15:01:15 +02:00

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/*
Copyright (c) Edgeless Systems GmbH
SPDX-License-Identifier: AGPL-3.0-only
*/
package measurements
import (
"context"
"encoding/json"
"io"
"net/http"
"net/url"
"strings"
"testing"
"github.com/siderolabs/talos/pkg/machinery/config/encoder"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"gopkg.in/yaml.v3"
"github.com/edgelesssys/constellation/v2/internal/cloud/cloudprovider"
"github.com/edgelesssys/constellation/v2/internal/variant"
"github.com/edgelesssys/constellation/v2/internal/versionsapi"
)
func TestMarshal(t *testing.T) {
testCases := map[string]struct {
m Measurement
wantYAML string
wantJSON string
}{
"measurement": {
m: Measurement{
Expected: []byte{253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222, 185, 63, 83, 185, 239, 81, 35, 159, 117, 44, 230, 157, 188, 96, 15, 53},
},
wantYAML: "expected: \"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35\"\nwarnOnly: false",
wantJSON: `{"expected":"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35","warnOnly":false}`,
},
"warn only": {
m: Measurement{
Expected: []byte{1, 2, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
ValidationOpt: WarnOnly,
},
wantYAML: "expected: \"0102030400000000000000000000000000000000000000000000000000000000\"\nwarnOnly: true",
wantJSON: `{"expected":"0102030400000000000000000000000000000000000000000000000000000000","warnOnly":true}`,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
{
// YAML
yaml, err := yaml.Marshal(tc.m)
require.NoError(err)
assert.YAMLEq(tc.wantYAML, string(yaml))
}
{
// JSON
json, err := json.Marshal(tc.m)
require.NoError(err)
assert.JSONEq(tc.wantJSON, string(json))
}
})
}
}
func TestUnmarshal(t *testing.T) {
testCases := map[string]struct {
inputYAML string
inputJSON string
wantMeasurements M
wantErr bool
}{
"valid measurements base64": {
inputYAML: "2:\n expected: \"/V3p3zUOO8RBCsBrv+XM3rk/U7nvUSOfdSzmnbxgDzU=\"\n3:\n expected: \"1aRJbSHeyaUljdsZxv61O7TTwEY/5gfySI3fTxAG754=\"",
inputJSON: `{"2":{"expected":"/V3p3zUOO8RBCsBrv+XM3rk/U7nvUSOfdSzmnbxgDzU="},"3":{"expected":"1aRJbSHeyaUljdsZxv61O7TTwEY/5gfySI3fTxAG754="}}`,
wantMeasurements: M{
2: {
Expected: []byte{253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222, 185, 63, 83, 185, 239, 81, 35, 159, 117, 44, 230, 157, 188, 96, 15, 53},
},
3: {
Expected: []byte{213, 164, 73, 109, 33, 222, 201, 165, 37, 141, 219, 25, 198, 254, 181, 59, 180, 211, 192, 70, 63, 230, 7, 242, 72, 141, 223, 79, 16, 6, 239, 158},
},
},
},
"valid measurements hex": {
inputYAML: "2:\n expected: \"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35\"\n3:\n expected: \"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9e\"",
inputJSON: `{"2":{"expected":"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35"},"3":{"expected":"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9e"}}`,
wantMeasurements: M{
2: {
Expected: []byte{253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222, 185, 63, 83, 185, 239, 81, 35, 159, 117, 44, 230, 157, 188, 96, 15, 53},
},
3: {
Expected: []byte{213, 164, 73, 109, 33, 222, 201, 165, 37, 141, 219, 25, 198, 254, 181, 59, 180, 211, 192, 70, 63, 230, 7, 242, 72, 141, 223, 79, 16, 6, 239, 158},
},
},
},
"valid measurements hex 48 bytes": {
inputYAML: "2:\n expected: \"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35fd5de9df350e3bc4410ac06bbfe5ccde\"\n3:\n expected: \"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9efd5de9df350e3bc4410ac06bbfe5ccde\"",
inputJSON: `{"2":{"expected":"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35fd5de9df350e3bc4410ac06bbfe5ccde"},"3":{"expected":"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9efd5de9df350e3bc4410ac06bbfe5ccde"}}`,
wantMeasurements: M{
2: {
Expected: []byte{253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222, 185, 63, 83, 185, 239, 81, 35, 159, 117, 44, 230, 157, 188, 96, 15, 53, 253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222},
},
3: {
Expected: []byte{213, 164, 73, 109, 33, 222, 201, 165, 37, 141, 219, 25, 198, 254, 181, 59, 180, 211, 192, 70, 63, 230, 7, 242, 72, 141, 223, 79, 16, 6, 239, 158, 253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222},
},
},
},
"empty bytes": {
inputYAML: "2:\n expected: \"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\"\n3:\n expected: \"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\"",
inputJSON: `{"2":{"expected":"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="},"3":{"expected":"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="}}`,
wantMeasurements: M{
2: {
Expected: []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
3: {
Expected: []byte{1, 2, 3, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
},
},
},
"invalid base64": {
inputYAML: "2:\n expected: \"This is not base64\"\n3:\n expected: \"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\"",
inputJSON: `{"2":{"expected":"This is not base64"},"3":{"expected":"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="}}`,
wantErr: true,
},
"legacy format": {
inputYAML: "2: \"/V3p3zUOO8RBCsBrv+XM3rk/U7nvUSOfdSzmnbxgDzU=\"\n3: \"1aRJbSHeyaUljdsZxv61O7TTwEY/5gfySI3fTxAG754=\"",
inputJSON: `{"2":"/V3p3zUOO8RBCsBrv+XM3rk/U7nvUSOfdSzmnbxgDzU=","3":"1aRJbSHeyaUljdsZxv61O7TTwEY/5gfySI3fTxAG754="}`,
wantMeasurements: M{
2: {
Expected: []byte{253, 93, 233, 223, 53, 14, 59, 196, 65, 10, 192, 107, 191, 229, 204, 222, 185, 63, 83, 185, 239, 81, 35, 159, 117, 44, 230, 157, 188, 96, 15, 53},
},
3: {
Expected: []byte{213, 164, 73, 109, 33, 222, 201, 165, 37, 141, 219, 25, 198, 254, 181, 59, 180, 211, 192, 70, 63, 230, 7, 242, 72, 141, 223, 79, 16, 6, 239, 158},
},
},
},
"invalid length hex": {
inputYAML: "2:\n expected: \"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef\"\n3:\n expected: \"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463f\"",
inputJSON: `{"2":{"expected":"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef"},"3":{"expected":"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463f"}}`,
wantErr: true,
},
"mixed length hex": {
inputYAML: "2:\n expected: \"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35fd5de9df350e3bc4410ac06bbfe5ccde\"\n3:\n expected: \"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9e\"",
inputJSON: `{"2":{"expected":"fd5de9df350e3bc4410ac06bbfe5ccdeb93f53b9ef51239f752ce69dbc600f35fd5de9df350e3bc4410ac06bbfe5ccde"},"3":{"expected":"d5a4496d21dec9a5258ddb19c6feb53bb4d3c0463fe607f2488ddf4f1006ef9e"}}`,
wantErr: true,
},
"invalid length base64": {
inputYAML: "2:\n expected: \"AA==\"\n3:\n expected: \"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==\"",
inputJSON: `{"2":{"expected":"AA=="},"3":{"expected":"AQIDBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=="}}`,
wantErr: true,
},
"invalid format": {
inputYAML: "1:\n expected:\n someKey: 12\n anotherKey: 34",
inputJSON: `{"1":{"expected":{"someKey":12,"anotherKey":34}}}`,
wantErr: true,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
{
// YAML
var m M
err := yaml.Unmarshal([]byte(tc.inputYAML), &m)
if tc.wantErr {
assert.Error(err, "yaml.Unmarshal should have failed")
} else {
require.NoError(err, "yaml.Unmarshal failed")
assert.Equal(tc.wantMeasurements, m)
}
}
{
// JSON
var m M
err := json.Unmarshal([]byte(tc.inputJSON), &m)
if tc.wantErr {
assert.Error(err, "json.Unmarshal should have failed")
} else {
require.NoError(err, "json.Unmarshal failed")
assert.Equal(tc.wantMeasurements, m)
}
}
})
}
}
func TestEncodeM(t *testing.T) {
testCases := map[string]struct {
m M
want string
}{
"basic": {
m: M{
1: WithAllBytes(1, false, PCRMeasurementLength),
2: WithAllBytes(2, WarnOnly, PCRMeasurementLength),
},
want: `1:
expected: "0101010101010101010101010101010101010101010101010101010101010101"
warnOnly: false
2:
expected: "0202020202020202020202020202020202020202020202020202020202020202"
warnOnly: true
`,
},
"output is sorted": {
m: M{
3: WithAllBytes(0, false, PCRMeasurementLength),
1: WithAllBytes(0, false, PCRMeasurementLength),
11: WithAllBytes(0, false, PCRMeasurementLength),
2: WithAllBytes(0, false, PCRMeasurementLength),
},
want: `1:
expected: "0000000000000000000000000000000000000000000000000000000000000000"
warnOnly: false
2:
expected: "0000000000000000000000000000000000000000000000000000000000000000"
warnOnly: false
3:
expected: "0000000000000000000000000000000000000000000000000000000000000000"
warnOnly: false
11:
expected: "0000000000000000000000000000000000000000000000000000000000000000"
warnOnly: false
`,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
require := require.New(t)
encoded, err := encoder.NewEncoder(tc.m).Encode()
require.NoError(err)
assert.Equal(tc.want, string(encoded))
})
}
}
func TestMeasurementsCopyFrom(t *testing.T) {
testCases := map[string]struct {
current M
newMeasurements M
wantMeasurements M
}{
"add to empty": {
current: M{},
newMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
wantMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
},
"keep existing": {
current: M{
4: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
5: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
newMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
wantMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
4: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
5: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
},
"overwrite existing": {
current: M{
2: WithAllBytes(0x04, Enforce, PCRMeasurementLength),
3: WithAllBytes(0x05, Enforce, PCRMeasurementLength),
},
newMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
wantMeasurements: M{
1: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
3: WithAllBytes(0x02, WarnOnly, PCRMeasurementLength),
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
tc.current.CopyFrom(tc.newMeasurements)
assert.Equal(tc.wantMeasurements, tc.current)
})
}
}
// roundTripFunc .
type roundTripFunc func(req *http.Request) *http.Response
// RoundTrip .
func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
return f(req), nil
}
// newTestClient returns *http.Client with Transport replaced to avoid making real calls.
func newTestClient(fn roundTripFunc) *http.Client {
return &http.Client{
Transport: fn,
}
}
func urlMustParse(raw string) *url.URL {
parsed, _ := url.Parse(raw)
return parsed
}
func TestMeasurementsFetchAndVerify(t *testing.T) {
// Cosign private key used to sign the
// Generated with: cosign generate-key-pair
// Password left empty.
//
// -----BEGIN ENCRYPTED COSIGN PRIVATE KEY-----
// eyJrZGYiOnsibmFtZSI6InNjcnlwdCIsInBhcmFtcyI6eyJOIjozMjc2OCwiciI6
// OCwicCI6MX0sInNhbHQiOiJlRHVYMWRQMGtIWVRnK0xkbjcxM0tjbFVJaU92eFVX
// VXgvNi9BbitFVk5BPSJ9LCJjaXBoZXIiOnsibmFtZSI6Im5hY2wvc2VjcmV0Ym94
// Iiwibm9uY2UiOiJwaWhLL2txNmFXa2hqSVVHR3RVUzhTVkdHTDNIWWp4TCJ9LCJj
// aXBoZXJ0ZXh0Ijoidm81SHVWRVFWcUZ2WFlQTTVPaTVaWHM5a255bndZU2dvcyth
// VklIeHcrOGFPamNZNEtvVjVmL3lHRHR0K3BHV2toanJPR1FLOWdBbmtsazFpQ0c5
// a2czUXpPQTZsU2JRaHgvZlowRVRZQ0hLeElncEdPRVRyTDlDenZDemhPZXVSOXJ6
// TDcvRjBBVy9vUDVqZXR3dmJMNmQxOEhjck9kWE8yVmYxY2w0YzNLZjVRcnFSZzlN
// dlRxQWFsNXJCNHNpY1JaMVhpUUJjb0YwNHc9PSJ9
// -----END ENCRYPTED COSIGN PRIVATE KEY-----
cosignPublicKey := []byte("-----BEGIN PUBLIC KEY-----\nMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEu78QgxOOcao6U91CSzEXxrKhvFTt\nJHNy+eX6EMePtDm8CnDF9HSwnTlD0itGJ/XHPQA5YX10fJAqI1y+ehlFMw==\n-----END PUBLIC KEY-----")
testCases := map[string]struct {
measurements string
csp cloudprovider.Provider
attestationVariant variant.Variant
imageVersion versionsapi.Version
measurementsStatus int
signature string
signatureStatus int
wantMeasurements M
wantSHA string
wantError bool
}{
"json measurements": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "MEUCIHuW2420EqN4Kj6OEaVMmufH7d01vyR1J+SWg8H4elyBAiEA1Ki5Hfq0iI70qpViYbrTFrd8e840NjtdAxGqJKiJgbA=",
signatureStatus: http.StatusOK,
wantMeasurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
wantSHA: "7269a1e8c6a379b86af605f993352df1d4a289bbf79fe655fd78338bd7549d52",
},
"404 measurements": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusNotFound,
signature: "MEUCIHuW2420EqN4Kj6OEaVMmufH7d01vyR1J+SWg8H4elyBAiEA1Ki5Hfq0iI70qpViYbrTFrd8e840NjtdAxGqJKiJgbA=",
signatureStatus: http.StatusOK,
wantError: true,
},
"404 signature": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "MEUCIHuW2420EqN4Kj6OEaVMmufH7d01vyR1J+SWg8H4elyBAiEA1Ki5Hfq0iI70qpViYbrTFrd8e840NjtdAxGqJKiJgbA=",
signatureStatus: http.StatusNotFound,
wantError: true,
},
"broken signature": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "AAAAAAA1RR91pWPw1BMWXTSmTBHg/JtfKerbZNQ9PJTWDdW0sgIhANQbETJGb67qzQmMVmcq007VUFbHRMtYWKZeeyRf0gVa",
signatureStatus: http.StatusOK,
wantError: true,
},
"metadata CSP mismatch": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.GCP,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "MEUCIHuW2420EqN4Kj6OEaVMmufH7d01vyR1J+SWg8H4elyBAiEA1Ki5Hfq0iI70qpViYbrTFrd8e840NjtdAxGqJKiJgbA=",
signatureStatus: http.StatusOK,
wantError: true,
},
"metadata image mismatch": {
measurements: `{"version":"v1.0.0-test","ref":"-","stream":"stable","list":[{"csp":"Unknown","attestationVariant":"dummy","measurements":{"0":{"expected":"0000000000000000000000000000000000000000000000000000000000000000","warnOnly":false}}}]}`,
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-another-image", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "MEUCIHuW2420EqN4Kj6OEaVMmufH7d01vyR1J+SWg8H4elyBAiEA1Ki5Hfq0iI70qpViYbrTFrd8e840NjtdAxGqJKiJgbA=",
signatureStatus: http.StatusOK,
wantError: true,
},
"not json": {
measurements: "This is some content to be signed!\n",
csp: cloudprovider.Unknown,
imageVersion: versionsapi.Version{Ref: "-", Stream: "stable", Version: "v1.0.0-test", Kind: versionsapi.VersionKindImage},
measurementsStatus: http.StatusOK,
signature: "MEUCIQCGA/lSu5qCJgNNvgMaTKJ9rj6vQMecUDaQo3ukaiAfUgIgWoxXRoDKLY9naN7YgxokM7r2fwnyYk3M2WKJJO1g6yo=",
signatureStatus: http.StatusOK,
wantError: true,
},
}
measurementsURL := urlMustParse("https://somesite.com/yaml")
signatureURL := urlMustParse("https://somesite.com/yaml.sig")
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
if tc.attestationVariant == nil {
tc.attestationVariant = variant.Dummy{}
}
client := newTestClient(func(req *http.Request) *http.Response {
if req.URL.String() == measurementsURL.String() {
return &http.Response{
StatusCode: tc.measurementsStatus,
Body: io.NopCloser(strings.NewReader(tc.measurements)),
Header: make(http.Header),
}
}
if req.URL.String() == signatureURL.String() {
return &http.Response{
StatusCode: tc.signatureStatus,
Body: io.NopCloser(strings.NewReader(tc.signature)),
Header: make(http.Header),
}
}
return &http.Response{
StatusCode: http.StatusNotFound,
Body: io.NopCloser(strings.NewReader("Not found.")),
Header: make(http.Header),
}
})
m := M{}
hash, err := m.FetchAndVerify(
context.Background(), client,
measurementsURL, signatureURL,
cosignPublicKey,
tc.imageVersion,
tc.csp,
tc.attestationVariant,
)
if tc.wantError {
assert.Error(err)
return
}
assert.Equal(tc.wantSHA, hash)
assert.NoError(err)
assert.EqualValues(tc.wantMeasurements, m)
})
}
}
func TestGetEnforced(t *testing.T) {
testCases := map[string]struct {
input M
want map[uint32]struct{}
}{
"only warnings": {
input: M{
0: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
},
want: map[uint32]struct{}{},
},
"all enforced": {
input: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
},
want: map[uint32]struct{}{
0: {},
1: {},
},
},
"mixed": {
input: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x02, Enforce, PCRMeasurementLength),
},
want: map[uint32]struct{}{
0: {},
2: {},
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
got := tc.input.GetEnforced()
enforced := map[uint32]struct{}{}
for _, id := range got {
enforced[id] = struct{}{}
}
assert.Equal(tc.want, enforced)
})
}
}
func TestSetEnforced(t *testing.T) {
testCases := map[string]struct {
input M
enforced []uint32
wantM M
wantErr bool
}{
"no enforced measurements": {
input: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
},
enforced: []uint32{},
wantM: M{
0: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
},
},
"all enforced measurements": {
input: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
},
enforced: []uint32{0, 1},
wantM: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
},
},
"mixed": {
input: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
2: WithAllBytes(0x02, Enforce, PCRMeasurementLength),
3: WithAllBytes(0x03, Enforce, PCRMeasurementLength),
},
enforced: []uint32{0, 2},
wantM: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
2: WithAllBytes(0x02, Enforce, PCRMeasurementLength),
3: WithAllBytes(0x03, WarnOnly, PCRMeasurementLength),
},
},
"warn only to enforced": {
input: M{
0: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
},
enforced: []uint32{0, 1},
wantM: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x01, Enforce, PCRMeasurementLength),
},
},
"more enforced than measurements": {
input: M{
0: WithAllBytes(0x00, WarnOnly, PCRMeasurementLength),
1: WithAllBytes(0x01, WarnOnly, PCRMeasurementLength),
},
enforced: []uint32{0, 1, 2},
wantErr: true,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
err := tc.input.SetEnforced(tc.enforced)
if tc.wantErr {
assert.Error(err)
return
}
assert.NoError(err)
assert.True(tc.input.EqualTo(tc.wantM))
})
}
}
func TestWithAllBytes(t *testing.T) {
testCases := map[string]struct {
b byte
warnOnly MeasurementValidationOption
wantMeasurement Measurement
}{
"0x00 warnOnly": {
b: 0x00,
warnOnly: WarnOnly,
wantMeasurement: Measurement{
Expected: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
ValidationOpt: WarnOnly,
},
},
"0x00": {
b: 0x00,
warnOnly: Enforce,
wantMeasurement: Measurement{
Expected: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
ValidationOpt: Enforce,
},
},
"0x01 warnOnly": {
b: 0x01,
warnOnly: WarnOnly,
wantMeasurement: Measurement{
Expected: []byte{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
ValidationOpt: WarnOnly,
},
},
"0x01": {
b: 0x01,
warnOnly: Enforce,
wantMeasurement: Measurement{
Expected: []byte{0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
ValidationOpt: Enforce,
},
},
"0xFF warnOnly": {
b: 0xFF,
warnOnly: WarnOnly,
wantMeasurement: Measurement{
Expected: []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
ValidationOpt: WarnOnly,
},
},
"0xFF": {
b: 0xFF,
warnOnly: Enforce,
wantMeasurement: Measurement{
Expected: []byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF},
ValidationOpt: Enforce,
},
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
measurement := WithAllBytes(tc.b, tc.warnOnly, PCRMeasurementLength)
assert.Equal(tc.wantMeasurement, measurement)
})
}
}
func TestEqualTo(t *testing.T) {
testCases := map[string]struct {
given M
other M
wantEqual bool
}{
"same values": {
given: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
},
other: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
},
wantEqual: true,
},
"different number of elements": {
given: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
},
other: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
wantEqual: false,
},
"different values": {
given: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
},
other: M{
0: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
1: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
wantEqual: false,
},
"different warn settings": {
given: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, Enforce, PCRMeasurementLength),
},
other: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
1: WithAllBytes(0xFF, WarnOnly, PCRMeasurementLength),
},
wantEqual: false,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
if tc.wantEqual {
assert.True(tc.given.EqualTo(tc.other))
} else {
assert.False(tc.given.EqualTo(tc.other))
}
})
}
}
func TestMergeImageMeasurementsV2(t *testing.T) {
testCases := map[string]struct {
measurements []ImageMeasurementsV2
wantMeasurements ImageMeasurementsV2
wantErr bool
}{
"only one element": {
measurements: []ImageMeasurementsV2{
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
},
},
},
wantMeasurements: ImageMeasurementsV2{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
},
},
},
"valid measurements": {
measurements: []ImageMeasurementsV2{
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
},
},
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.GCP,
AttestationVariant: "gcp-sev-es",
Measurements: M{
1: WithAllBytes(0x11, Enforce, PCRMeasurementLength),
},
},
},
},
},
wantMeasurements: ImageMeasurementsV2{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
{
CSP: cloudprovider.GCP,
AttestationVariant: "gcp-sev-es",
Measurements: M{
1: WithAllBytes(0x11, Enforce, PCRMeasurementLength),
},
},
},
},
},
"sorting": {
measurements: []ImageMeasurementsV2{
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.GCP,
AttestationVariant: "gcp-sev-es",
Measurements: M{
1: WithAllBytes(0x11, Enforce, PCRMeasurementLength),
},
},
},
},
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
},
},
},
wantMeasurements: ImageMeasurementsV2{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
{
CSP: cloudprovider.GCP,
AttestationVariant: "gcp-sev-es",
Measurements: M{
1: WithAllBytes(0x11, Enforce, PCRMeasurementLength),
},
},
},
},
},
"mismatch in base info": {
measurements: []ImageMeasurementsV2{
{
Ref: "test-ref",
Stream: "nightly",
Version: "v1.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.AWS,
AttestationVariant: "aws-nitro-tpm",
Measurements: M{
0: WithAllBytes(0x00, Enforce, PCRMeasurementLength),
},
},
},
},
{
Ref: "other-ref",
Stream: "stable",
Version: "v2.0.0",
List: []ImageMeasurementsV2Entry{
{
CSP: cloudprovider.GCP,
AttestationVariant: "gcp-sev-es",
Measurements: M{
1: WithAllBytes(0x11, Enforce, PCRMeasurementLength),
},
},
},
},
},
wantErr: true,
},
"empty list": {
wantErr: true,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
assert := assert.New(t)
gotMeasurements, err := MergeImageMeasurementsV2(tc.measurements...)
if tc.wantErr {
assert.Error(err)
return
}
assert.NoError(err)
assert.Equal(tc.wantMeasurements, gotMeasurements)
})
}
}
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