func newContentAddressableImage(v1Compatibility []byte, blobSum digest.Digest, parent digest.Digest) (contentAddressableDescriptor, error) {
img := contentAddressableDescriptor{
v1Compatibility: v1Compatibility,
}
var err error
img.config, err = image.MakeImageConfig(v1Compatibility, blobSum, parent)
if err != nil {
return img, err
}
img.strongID, err = image.StrongID(img.config)
if err != nil {
return img, err
}
unmarshalledConfig, err := image.NewImgJSON(v1Compatibility)
if err != nil {
return img, err
}
img.compatibilityID = unmarshalledConfig.ID
img.id = img.strongID.Hex()
return img, nil
}
// validateImageInGraph checks that an image in the graph has the expected
// strongID. id is the entry in the graph to check, imgs is the slice of
// images being processed (for access to the parent), and i is the index
// into this slice which the graph entry should be checked against.
func (p *v2Puller) validateImageInGraph(id string, imgs []contentAddressableDescriptor, i int) error {
img, err := p.graph.Get(id)
if err != nil {
return fmt.Errorf("missing: %v", err)
}
if runtime.GOOS == "windows" {
// TODO - (swernli:11-16-2015) Skipping content addressable IDs on
// Windows as a hack for TP4 compat. The correct fix is to ensure that
// Windows layers do not have anything in them that takes a dependency
// on the ID of the layer in the management client. This will be fixed
// in Windows post-TP4.
return nil
}
layerID, err := p.graph.getLayerDigest(id)
if err != nil {
return fmt.Errorf("digest: %v", err)
}
var parentID digest.Digest
if i != len(imgs)-1 {
if img.Parent != imgs[i+1].id { // comparing that graph points to validated ID
return fmt.Errorf("parent: %v %v", img.Parent, imgs[i+1].id)
}
parentID = imgs[i+1].strongID
} else if img.Parent != "" {
return fmt.Errorf("unexpected parent: %v", img.Parent)
}
v1Config, err := p.graph.getV1CompatibilityConfig(img.ID)
if err != nil {
return fmt.Errorf("v1Compatibility: %v %v", img.ID, err)
}
json, err := image.MakeImageConfig(v1Config, layerID, parentID)
if err != nil {
return fmt.Errorf("make config: %v", err)
}
if dgst, err := image.StrongID(json); err == nil && dgst == imgs[i].strongID {
logrus.Debugf("Validated %v as %v", dgst, id)
} else {
return fmt.Errorf("digest mismatch: %v %v, error: %v", dgst, imgs[i].strongID, err)
}
// All clear
return nil
}
// validateImageInGraph checks that an image in the graph has the expected
// strongID. id is the entry in the graph to check, imgs is the slice of
// images being processed (for access to the parent), and i is the index
// into this slice which the graph entry should be checked against.
func (p *v2Puller) validateImageInGraph(id string, imgs []contentAddressableDescriptor, i int) error {
img, err := p.graph.Get(id)
if err != nil {
return fmt.Errorf("missing: %v", err)
}
layerID, err := p.graph.getLayerDigest(id)
if err != nil {
return fmt.Errorf("digest: %v", err)
}
var parentID digest.Digest
if i != len(imgs)-1 {
if img.Parent != imgs[i+1].id { // comparing that graph points to validated ID
return fmt.Errorf("parent: %v %v", img.Parent, imgs[i+1].id)
} else {
parentID = imgs[i+1].strongID
}
} else if img.Parent != "" {
return fmt.Errorf("unexpected parent: %v", img.Parent)
}
v1Config, err := p.graph.getV1CompatibilityConfig(img.ID)
if err != nil {
return fmt.Errorf("v1Compatibility: %v %v", img.ID, err)
}
json, err := image.MakeImageConfig(v1Config, layerID, parentID)
if err != nil {
return fmt.Errorf("make config: %v", err)
}
if dgst, err := image.StrongID(json); err == nil && dgst == imgs[i].strongID {
logrus.Debugf("Validated %v as %v", dgst, id)
} else {
return fmt.Errorf("digest mismatch: %v %v, error: %v", dgst, imgs[i].strongID, err)
}
// All clear
return nil
}
func toLayers(fsl []manifest.FSLayer, history []manifest.History) (r []Layer, err error) {
var parent digest.Digest
for i := len(fsl) - 1; i >= 0; i-- {
var img image.Image
err := json.Unmarshal([]byte(history[i].V1Compatibility), &img)
if err != nil {
return nil, err
}
config, err := image.MakeImageConfig([]byte(history[i].V1Compatibility), fsl[i].BlobSum, parent)
id, err := image.StrongID(config)
r = append(r, Layer{
BlobSum: fsl[i].BlobSum,
Image: img,
StrongID: id,
ParentStrongID: parent,
})
parent = id
}
return
}