load image config

config.go

@@ -0,0 +1,42 @@
+// Copyright 2022 go-imageinspect authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package imageinspect
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/containerd/containerd/content"
+	"github.com/containerd/containerd/remotes"
+	ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
+)
+
+type Config struct {
+	ocispecs.Image
+}
+
+func (l *Loader) scanConfig(ctx context.Context, fetcher remotes.Fetcher, desc ocispecs.Descriptor, img *Image) error {
+	_, err := remotes.FetchHandler(l.cache, fetcher)(ctx, desc)
+	if err != nil {
+		return err
+	}
+
+	dt, err := content.ReadBlob(ctx, l.cache, desc)
+	if err != nil {
+		return err
+	}
+
+	return json.Unmarshal(dt, &img.Config)
+}

load.go

@@ -173,6 +173,10 @@ func (l *Loader) Load(ctx context.Context, ref string) (*Result, error) {
 			img.Title = title
 		}
 
+		if err := l.scanConfig(ctx, fetcher, mfst.manifest.Config, &img); err != nil {
+			return nil, err
+		}
+
 		refs, ok := r.refs[dgst]
 		if ok {
 			if err := l.scanSBOM(ctx, fetcher, r, dgst, refs, &img); err != nil {

load_test.go

@@ -70,6 +70,7 @@ func TestSingleArchManifest(t *testing.T) {
 
 	require.Equal(t, int64(300), img.Size)
 	require.Equal(t, "linux/arm64", img.Platform)
+	require.NotNil(t, img.Config)
 }
 
 func TestMultiArchManifest(t *testing.T) {
@@ -146,12 +147,14 @@ func TestMultiArchManifest(t *testing.T) {
 
 	require.Equal(t, int64(25), img.Size)
 	require.Equal(t, "linux/arm64", img.Platform)
+	require.NotNil(t, img.Config)
 
 	img, ok = r.Images["linux/amd64"]
 	require.True(t, ok)
 
 	require.Equal(t, int64(50), img.Size)
 	require.Equal(t, "linux/amd64", img.Platform)
+	require.NotNil(t, img.Config)
 }
 
 func TestTitle(t *testing.T) {

types.go

@@ -58,6 +58,7 @@ type Image struct {
 	Size             int64
 
 	Signatures []Signature
+	Config     *Config     `json:",omitempty"`
 	SBOM       *SBOM       `json:",omitempty"`
 	Provenance *Provenance `json:",omitempty"`