Function GetImageReferencesAndAuth

cmd/docker-trust/internal/trust/trust.go:342–368

GetImageReferencesAndAuth retrieves the necessary reference and auth information for an image name as an ImageRefAndAuth struct

(ctx context.Context,
	authResolver func(ctx context.Context, index *registrytypes.IndexInfo) registrytypes.AuthConfig,
	imgName string,
)

// GetImageReferencesAndAuth retrieves the necessary reference and auth information for an image name
// as an ImageRefAndAuth struct
func GetImageReferencesAndAuth(ctx context.Context,
	authResolver func(ctx context.Context, index *registrytypes.IndexInfo) registrytypes.AuthConfig,
	imgName string,
) (ImageRefAndAuth, error) {
	ref, err := reference.ParseNormalizedNamed(imgName)
	if err != nil {
		return ImageRefAndAuth{}, err
	}

	// Resolve the Repository name from fqn to RepositoryInfo, and create an
	// IndexInfo. Docker Content Trust uses the IndexInfo.Official field to
	// select the right domain for Docker Hub's Notary server;
	// https://github.com/docker/cli/blob/v28.4.0/cli/trust/trust.go#L65-L79
	indexInfo := registry.NewIndexInfo(ref)
	authConfig := authResolver(ctx, indexInfo)
	return ImageRefAndAuth{
		original:   imgName,
		authConfig: &authConfig,
		reference:  ref,
		repoInfo: &RepositoryInfo{
			Name:  reference.TrimNamed(ref),
			Index: indexInfo,
		},
		tag:    getTag(ref),
		digest: getDigest(ref),
	}, nil
}

func getTag(ref reference.Named) string {
	switch x := ref.(type) {