1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package container
import (
"fmt"
"io"
"strings"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/packages/container/helm"
"code.gitea.io/gitea/modules/packages/container/oci"
"code.gitea.io/gitea/modules/validation"
)
const (
PropertyRepository = "container.repository"
PropertyDigest = "container.digest"
PropertyMediaType = "container.mediatype"
PropertyManifestTagged = "container.manifest.tagged"
PropertyManifestReference = "container.manifest.reference"
DefaultPlatform = "linux/amd64"
labelLicenses = "org.opencontainers.image.licenses"
labelURL = "org.opencontainers.image.url"
labelSource = "org.opencontainers.image.source"
labelDocumentation = "org.opencontainers.image.documentation"
labelDescription = "org.opencontainers.image.description"
labelAuthors = "org.opencontainers.image.authors"
)
type ImageType string
const (
TypeOCI ImageType = "oci"
TypeHelm ImageType = "helm"
)
// Name gets the name of the image type
func (it ImageType) Name() string {
switch it {
case TypeHelm:
return "Helm Chart"
default:
return "OCI / Docker"
}
}
// Metadata represents the metadata of a Container package
type Metadata struct {
Type ImageType `json:"type"`
IsTagged bool `json:"is_tagged"`
Platform string `json:"platform,omitempty"`
Description string `json:"description,omitempty"`
Authors []string `json:"authors,omitempty"`
Licenses string `json:"license,omitempty"`
ProjectURL string `json:"project_url,omitempty"`
RepositoryURL string `json:"repository_url,omitempty"`
DocumentationURL string `json:"documentation_url,omitempty"`
Labels map[string]string `json:"labels,omitempty"`
ImageLayers []string `json:"layer_creation,omitempty"`
MultiArch map[string]string `json:"multiarch,omitempty"`
}
// ParseImageConfig parses the metadata of an image config
func ParseImageConfig(mediaType oci.MediaType, r io.Reader) (*Metadata, error) {
if strings.EqualFold(string(mediaType), helm.ConfigMediaType) {
return parseHelmConfig(r)
}
// fallback to OCI Image Config
return parseOCIImageConfig(r)
}
func parseOCIImageConfig(r io.Reader) (*Metadata, error) {
var image oci.Image
if err := json.NewDecoder(r).Decode(&image); err != nil {
return nil, err
}
platform := DefaultPlatform
if image.OS != "" && image.Architecture != "" {
platform = fmt.Sprintf("%s/%s", image.OS, image.Architecture)
if image.Variant != "" {
platform = fmt.Sprintf("%s/%s", platform, image.Variant)
}
}
imageLayers := make([]string, 0, len(image.History))
for _, history := range image.History {
cmd := history.CreatedBy
if i := strings.Index(cmd, "#(nop) "); i != -1 {
cmd = strings.TrimSpace(cmd[i+7:])
}
if cmd != "" {
imageLayers = append(imageLayers, cmd)
}
}
metadata := &Metadata{
Type: TypeOCI,
Platform: platform,
Licenses: image.Config.Labels[labelLicenses],
ProjectURL: image.Config.Labels[labelURL],
RepositoryURL: image.Config.Labels[labelSource],
DocumentationURL: image.Config.Labels[labelDocumentation],
Description: image.Config.Labels[labelDescription],
Labels: image.Config.Labels,
ImageLayers: imageLayers,
}
if authors, ok := image.Config.Labels[labelAuthors]; ok {
metadata.Authors = []string{authors}
}
if !validation.IsValidURL(metadata.ProjectURL) {
metadata.ProjectURL = ""
}
if !validation.IsValidURL(metadata.RepositoryURL) {
metadata.RepositoryURL = ""
}
if !validation.IsValidURL(metadata.DocumentationURL) {
metadata.DocumentationURL = ""
}
return metadata, nil
}
func parseHelmConfig(r io.Reader) (*Metadata, error) {
var config helm.Metadata
if err := json.NewDecoder(r).Decode(&config); err != nil {
return nil, err
}
metadata := &Metadata{
Type: TypeHelm,
Description: config.Description,
ProjectURL: config.Home,
}
if len(config.Maintainers) > 0 {
authors := make([]string, 0, len(config.Maintainers))
for _, maintainer := range config.Maintainers {
authors = append(authors, maintainer.Name)
}
metadata.Authors = authors
}
if len(config.Sources) > 0 && validation.IsValidURL(config.Sources[0]) {
metadata.RepositoryURL = config.Sources[0]
}
if !validation.IsValidURL(metadata.ProjectURL) {
metadata.ProjectURL = ""
}
return metadata, nil
}
|
