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https://github.com/go-gitea/gitea
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Fixes #23771 Changes the display of different architectures for multiarch images to show the image size: ![grafik](https://user-images.githubusercontent.com/1666336/228781477-cc76c4d1-4728-434f-8a27-fc008790d924.png)
167 lines
4.6 KiB
Go
167 lines
4.6 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package container
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import (
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"fmt"
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"io"
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"strings"
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"code.gitea.io/gitea/modules/json"
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"code.gitea.io/gitea/modules/packages/container/helm"
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"code.gitea.io/gitea/modules/validation"
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oci "github.com/opencontainers/image-spec/specs-go/v1"
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)
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const (
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PropertyRepository = "container.repository"
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PropertyDigest = "container.digest"
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PropertyMediaType = "container.mediatype"
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PropertyManifestTagged = "container.manifest.tagged"
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PropertyManifestReference = "container.manifest.reference"
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DefaultPlatform = "linux/amd64"
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labelLicenses = "org.opencontainers.image.licenses"
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labelURL = "org.opencontainers.image.url"
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labelSource = "org.opencontainers.image.source"
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labelDocumentation = "org.opencontainers.image.documentation"
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labelDescription = "org.opencontainers.image.description"
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labelAuthors = "org.opencontainers.image.authors"
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)
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type ImageType string
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const (
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TypeOCI ImageType = "oci"
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TypeHelm ImageType = "helm"
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)
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// Name gets the name of the image type
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func (it ImageType) Name() string {
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switch it {
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case TypeHelm:
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return "Helm Chart"
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default:
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return "OCI / Docker"
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}
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}
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// Metadata represents the metadata of a Container package
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type Metadata struct {
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Type ImageType `json:"type"`
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IsTagged bool `json:"is_tagged"`
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Platform string `json:"platform,omitempty"`
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Description string `json:"description,omitempty"`
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Authors []string `json:"authors,omitempty"`
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Licenses string `json:"license,omitempty"`
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ProjectURL string `json:"project_url,omitempty"`
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RepositoryURL string `json:"repository_url,omitempty"`
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DocumentationURL string `json:"documentation_url,omitempty"`
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Labels map[string]string `json:"labels,omitempty"`
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ImageLayers []string `json:"layer_creation,omitempty"`
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Manifests []*Manifest `json:"manifests,omitempty"`
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}
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type Manifest struct {
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Platform string `json:"platform"`
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Digest string `json:"digest"`
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Size int64 `json:"size"`
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}
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// ParseImageConfig parses the metadata of an image config
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func ParseImageConfig(mt string, r io.Reader) (*Metadata, error) {
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if strings.EqualFold(mt, helm.ConfigMediaType) {
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return parseHelmConfig(r)
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}
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// fallback to OCI Image Config
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return parseOCIImageConfig(r)
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}
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func parseOCIImageConfig(r io.Reader) (*Metadata, error) {
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var image oci.Image
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if err := json.NewDecoder(r).Decode(&image); err != nil {
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return nil, err
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}
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platform := DefaultPlatform
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if image.OS != "" && image.Architecture != "" {
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platform = fmt.Sprintf("%s/%s", image.OS, image.Architecture)
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if image.Variant != "" {
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platform = fmt.Sprintf("%s/%s", platform, image.Variant)
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}
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}
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imageLayers := make([]string, 0, len(image.History))
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for _, history := range image.History {
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cmd := history.CreatedBy
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if i := strings.Index(cmd, "#(nop) "); i != -1 {
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cmd = strings.TrimSpace(cmd[i+7:])
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}
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if cmd != "" {
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imageLayers = append(imageLayers, cmd)
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}
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}
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metadata := &Metadata{
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Type: TypeOCI,
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Platform: platform,
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Licenses: image.Config.Labels[labelLicenses],
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ProjectURL: image.Config.Labels[labelURL],
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RepositoryURL: image.Config.Labels[labelSource],
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DocumentationURL: image.Config.Labels[labelDocumentation],
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Description: image.Config.Labels[labelDescription],
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Labels: image.Config.Labels,
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ImageLayers: imageLayers,
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}
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if authors, ok := image.Config.Labels[labelAuthors]; ok {
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metadata.Authors = []string{authors}
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}
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if !validation.IsValidURL(metadata.ProjectURL) {
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metadata.ProjectURL = ""
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}
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if !validation.IsValidURL(metadata.RepositoryURL) {
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metadata.RepositoryURL = ""
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}
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if !validation.IsValidURL(metadata.DocumentationURL) {
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metadata.DocumentationURL = ""
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}
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return metadata, nil
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}
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func parseHelmConfig(r io.Reader) (*Metadata, error) {
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var config helm.Metadata
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if err := json.NewDecoder(r).Decode(&config); err != nil {
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return nil, err
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}
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metadata := &Metadata{
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Type: TypeHelm,
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Description: config.Description,
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ProjectURL: config.Home,
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}
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if len(config.Maintainers) > 0 {
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authors := make([]string, 0, len(config.Maintainers))
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for _, maintainer := range config.Maintainers {
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authors = append(authors, maintainer.Name)
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}
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metadata.Authors = authors
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}
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if len(config.Sources) > 0 && validation.IsValidURL(config.Sources[0]) {
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metadata.RepositoryURL = config.Sources[0]
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}
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if !validation.IsValidURL(metadata.ProjectURL) {
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metadata.ProjectURL = ""
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}
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return metadata, nil
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}
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