reorder some source files
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@@ -0,0 +1,236 @@
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/*
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* Copyright 2026 Oleg Borodin <onborodin@gmail.com>
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*
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* This work is published and licensed under a Creative Commons
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* Attribution-NonCommercial-NoDerivatives 4.0 International License.
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*
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* Distribution of this work is permitted, but commercial use and
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* modifications are strictly prohibited.
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*/
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package gcrcli
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import (
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"context"
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"encoding/json"
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"fmt"
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"github.com/google/go-containerregistry/pkg/authn"
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"github.com/google/go-containerregistry/pkg/crane"
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"github.com/google/go-containerregistry/pkg/name"
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"github.com/google/go-containerregistry/pkg/v1/remote"
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"github.com/google/go-containerregistry/pkg/v1/remote/transport"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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)
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const (
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indexMediaType = "application/vnd.oci.image.index.v1+json"
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manifestMediaType = "application/vnd.oci.image.manifest.v1+json"
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)
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func (cli *Client) ImageManifest(ctx context.Context, imagepath string) (any, error) {
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var err error
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var res any
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imagepath, username, password, err := repackReference(imagepath)
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if err != nil {
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return res, err
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}
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options := make([]crane.Option, 0)
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options = append(options, crane.WithContext(ctx))
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ref, err := name.ParseReference(imagepath)
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if err != nil {
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return res, err
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}
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repo := ref.Context()
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if err != nil {
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return res, err
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}
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// Manifest
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if username != "" && password != "" {
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defaultTransport := NewRoundTripper(cli.skipTLSVerify)
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scopes := []string{repo.Scope(transport.PullScope)}
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regName := repo.RegistryStr()
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reg, err := name.NewRegistry(regName)
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if err != nil {
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return res, err
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}
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basicAuth := &authn.Basic{
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Username: username,
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Password: password,
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}
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authTransport, err := transport.NewWithContext(ctx, reg, basicAuth, defaultTransport, scopes)
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if err != nil {
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return res, err
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}
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options = append(options, crane.WithTransport(authTransport))
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} else {
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transport := NewRoundTripper(cli.skipTLSVerify)
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options = append(options, crane.WithTransport(transport))
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}
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manifestBytes, err := crane.Manifest(imagepath, options...)
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if err != nil {
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return res, err
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}
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var descr ocispec.Descriptor
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err = json.Unmarshal(manifestBytes, &descr)
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if err != nil {
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return res, err
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}
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switch descr.MediaType {
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case indexMediaType:
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var index ocispec.Index
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err = json.Unmarshal(manifestBytes, &index)
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if err != nil {
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return res, err
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}
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res = index
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//case manifestMediaType:
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default:
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var manifest ocispec.Manifest
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err = json.Unmarshal(manifestBytes, &manifest)
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if err != nil {
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return res, err
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}
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res = &manifest
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fmt.Printf("Unknown or empty media type: %s", descr.MediaType)
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}
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return res, err
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}
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func (cli *Client) ImageTags(ctx context.Context, imagepath string) ([]string, error) {
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var err error
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res := make([]string, 0)
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imagepath, username, password, err := repackReference(imagepath)
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if err != nil {
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return res, err
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}
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options := make([]crane.Option, 0)
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options = append(options, crane.WithContext(ctx))
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ref, err := name.ParseReference(imagepath)
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if err != nil {
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return res, err
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}
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repo := ref.Context()
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if err != nil {
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return res, err
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}
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// Tags
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remoteOptions := make([]remote.Option, 0)
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remoteOptions = append(remoteOptions, remote.WithContext(ctx))
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if username != "" && password != "" {
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defaultTransport := NewRoundTripper(cli.skipTLSVerify)
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scopes := []string{repo.Scope(transport.PullScope)}
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regName := repo.RegistryStr()
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reg, err := name.NewRegistry(regName)
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if err != nil {
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return res, err
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}
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basicAuth := &authn.Basic{
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Username: username,
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Password: password,
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}
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authTransport, err := transport.NewWithContext(ctx, reg, basicAuth, defaultTransport, scopes)
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if err != nil {
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return res, err
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}
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remoteOptions = append(remoteOptions, remote.WithTransport(authTransport))
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} else {
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transport := NewRoundTripper(cli.skipTLSVerify)
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options = append(options, crane.WithTransport(transport))
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}
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tags, err := remote.List(repo, remoteOptions...)
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if err != nil {
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return res, err
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}
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res = tags
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return res, err
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}
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func (cli *Client) ImageConfig(ctx context.Context, imagepath string) (*ocispec.Image, error) {
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var err error
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res := &ocispec.Image{}
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imagepath, username, password, err := repackReference(imagepath)
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if err != nil {
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return res, err
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}
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options := make([]crane.Option, 0)
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options = append(options, crane.WithContext(ctx))
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ref, err := name.ParseReference(imagepath)
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if err != nil {
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return res, err
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}
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repo := ref.Context()
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if err != nil {
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return res, err
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}
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// Config
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if username != "" && password != "" {
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defaultTransport := NewRoundTripper(cli.skipTLSVerify)
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scopes := []string{repo.Scope(transport.PullScope)}
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regName := repo.RegistryStr()
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reg, err := name.NewRegistry(regName)
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if err != nil {
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return res, err
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}
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basicAuth := &authn.Basic{
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Username: username,
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Password: password,
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}
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authTransport, err := transport.NewWithContext(ctx, reg, basicAuth, defaultTransport, scopes)
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if err != nil {
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return res, err
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}
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options = append(options, crane.WithTransport(authTransport))
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} else {
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transport := NewRoundTripper(cli.skipTLSVerify)
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options = append(options, crane.WithTransport(transport))
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}
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configBytes, err := crane.Config(imagepath, options...)
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if err != nil {
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return res, err
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}
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var config ocispec.Image
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err = json.Unmarshal(configBytes, &config)
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if err != nil {
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return res, err
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}
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res = &config
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return res, err
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}
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func (cli *Client) CatalogImages(ctx context.Context, source string) ([]string, error) {
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var err error
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res := make([]string, 0)
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source, _, _, err = repackSource(source)
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if err != nil {
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return res, err
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}
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options := make([]crane.Option, 0)
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options = append(options, crane.WithContext(ctx))
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// Config
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transport := NewRoundTripper(cli.skipTLSVerify)
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options = append(options, crane.WithTransport(transport))
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res, err = crane.Catalog(source, options...)
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if err != nil {
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return res, err
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}
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return res, err
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}
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