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Merge pull request #1498 from jedevc/attestation-printing

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Improved attestation inspect
This commit is contained in:
Tõnis Tiigi 2023-01-09 11:22:20 -08:00 committed by GitHub
commit 8340c40647
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 164 additions and 194 deletions
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54
docs/reference/buildx_imagetools_inspect.md
View File

@ -287,22 +287,11 @@ $ docker buildx imagetools inspect moby/buildkit:master --format "{{json .Manife
Following command provides [SLSA](https://github.com/moby/buildkit/blob/master/docs/attestations/slsa-provenance.md) JSON output:
```console
$ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SLSA}}"
$ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .Provenance}}"
```
```json
{
"Provenance": {
"_type": "https://in-toto.io/Statement/v0.1",
"predicateType": "https://slsa.dev/provenance/v0.2",
"subject": [
{
"name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
"digest": {
"sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
}
}
],
"predicate": {
"SLSA": {
"builder": {
"id": ""
},
@ -351,7 +340,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SL
"https://mobyproject.org/buildkit@v1#metadata": {}
}
}
}
}
```
@ -363,17 +351,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SB
```json
{
"SPDX": {
"_type": "https://in-toto.io/Statement/v0.1",
"predicateType": "https://spdx.dev/Document",
"subject": [
{
"name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
"digest": {
"sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
}
}
],
"predicate": {
"SPDXID": "SPDXRef-DOCUMENT",
"creationInfo": {
"created": "2022-12-01T11:46:48.063400162Z",
@ -389,7 +366,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .SB
"files": [...],
"spdxVersion": "SPDX-2.2"
}
}
}
```
@ -465,19 +441,8 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
}
]
},
"SLSA": {
"Provenance": {
"_type": "https://in-toto.io/Statement/v0.1",
"predicateType": "https://slsa.dev/provenance/v0.2",
"subject": [
{
"name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
"digest": {
"sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
}
}
],
"predicate": {
"SLSA": {
"builder": {
"id": ""
},
@ -526,21 +491,9 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
"https://mobyproject.org/buildkit@v1#metadata": {}
}
}
}
},
"SBOM": {
"SPDX": {
"_type": "https://in-toto.io/Statement/v0.1",
"predicateType": "https://spdx.dev/Document",
"subject": [
{
"name": "pkg:docker/crazymax/buildkit@attest?platform=linux%2Famd64",
"digest": {
"sha256": "fbd10fe50b4b174bb9ea273e2eb9827fa8bf5c88edd8635a93dc83e0d1aecb55"
}
}
],
"predicate": {
"SPDXID": "SPDXRef-DOCUMENT",
"creationInfo": {
"created": "2022-12-01T11:46:48.063400162Z",
@ -557,7 +510,6 @@ $ docker buildx imagetools inspect crazymax/buildkit:attest --format "{{json .}}
"spdxVersion": "SPDX-2.2"
}
}
}
}
```

42
util/imagetools/loader.go
View File

@ -48,7 +48,7 @@ type index struct {
type asset struct {
config *ocispec.Image
sbom *sbomStub
slsa *slsaStub
provenance *provenanceStub
}
type result struct {
@ -255,7 +255,8 @@ func (l *loader) scanConfig(ctx context.Context, fetcher remotes.Fetcher, desc o
}
type sbomStub struct {
SPDX json.RawMessage `json:",omitempty"`
SPDX interface{} `json:",omitempty"`
AdditionalSPDXs []interface{} `json:",omitempty"`
}
func (l *loader) scanSBOM(ctx context.Context, fetcher remotes.Fetcher, r *result, refs []digest.Digest, as *asset) error {
@ -275,8 +276,18 @@ func (l *loader) scanSBOM(ctx context.Context, fetcher remotes.Fetcher, r *resul
if err != nil {
return err
}
as.sbom = &sbomStub{
SPDX: dt,
var spdx struct {
Predicate interface{} `json:"predicate"`
}
if err := json.Unmarshal(dt, &spdx); err != nil {
return err
}
if as.sbom == nil {
as.sbom = &sbomStub{}
as.sbom.SPDX = spdx.Predicate
} else {
as.sbom.AdditionalSPDXs = append(as.sbom.AdditionalSPDXs, spdx.Predicate)
}
}
}
@ -284,8 +295,8 @@ func (l *loader) scanSBOM(ctx context.Context, fetcher remotes.Fetcher, r *resul
return nil
}
type slsaStub struct {
Provenance json.RawMessage `json:",omitempty"`
type provenanceStub struct {
SLSA interface{} `json:",omitempty"`
}
func (l *loader) scanProvenance(ctx context.Context, fetcher remotes.Fetcher, r *result, refs []digest.Digest, as *asset) error {
@ -305,9 +316,16 @@ func (l *loader) scanProvenance(ctx context.Context, fetcher remotes.Fetcher, r
if err != nil {
return err
}
as.slsa = &slsaStub{
Provenance: dt,
var slsa struct {
Predicate interface{} `json:"predicate"`
}
if err := json.Unmarshal(dt, &slsa); err != nil {
return err
}
as.provenance = &provenanceStub{
SLSA: slsa.Predicate,
}
break
}
}
}
@ -328,16 +346,16 @@ func (r *result) Configs() map[string]*ocispec.Image {
return res
}
func (r *result) SLSA() map[string]slsaStub {
func (r *result) Provenance() map[string]provenanceStub {
if len(r.assets) == 0 {
return nil
}
res := make(map[string]slsaStub)
res := make(map[string]provenanceStub)
for p, a := range r.assets {
if a.slsa == nil {
if a.provenance == nil {
continue
}
res[p] = *a.slsa
res[p] = *a.provenance
}
return res
}

16
util/imagetools/printers.go
View File

@ -99,7 +99,7 @@ func (p *Printer) Print(raw bool, out io.Writer) error {
}
imageconfigs := res.Configs()
slsas := res.SLSA()
provenances := res.Provenance()
sboms := res.SBOM()
format := tpl.Root.String()
@ -146,13 +146,13 @@ func (p *Printer) Print(raw bool, out io.Writer) error {
Name string `json:"name,omitempty"`
Manifest interface{} `json:"manifest,omitempty"`
Image map[string]*ocispecs.Image `json:"image,omitempty"`
SLSA map[string]slsaStub `json:"SLSA,omitempty"`
Provenance map[string]provenanceStub `json:"Provenance,omitempty"`
SBOM map[string]sbomStub `json:"SBOM,omitempty"`
}{
Name: p.name,
Manifest: mfst,
Image: imageconfigs,
SLSA: slsas,
Provenance: provenances,
SBOM: sboms,
})
}
@ -160,9 +160,9 @@ func (p *Printer) Print(raw bool, out io.Writer) error {
for _, v := range imageconfigs {
ic = v
}
var slsa slsaStub
for _, v := range slsas {
slsa = v
var provenance provenanceStub
for _, v := range provenances {
provenance = v
}
var sbom sbomStub
for _, v := range sboms {
@ -172,13 +172,13 @@ func (p *Printer) Print(raw bool, out io.Writer) error {
Name string `json:"name,omitempty"`
Manifest interface{} `json:"manifest,omitempty"`
Image *ocispecs.Image `json:"image,omitempty"`
SLSA slsaStub `json:"SLSA,omitempty"`
Provenance provenanceStub `json:"Provenance,omitempty"`
SBOM sbomStub `json:"SBOM,omitempty"`
}{
Name: p.name,
Manifest: mfst,
Image: ic,
SLSA: slsa,
Provenance: provenance,
SBOM: sbom,
})
}