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
160
161
162
163
164
|
package distribution // import "github.com/docker/docker/distribution"
import (
"context"
"fmt"
"net"
"net/http"
"time"
"github.com/distribution/reference"
"github.com/docker/distribution"
"github.com/docker/distribution/manifest/schema2"
"github.com/docker/distribution/registry/client"
"github.com/docker/distribution/registry/client/auth"
"github.com/docker/distribution/registry/client/transport"
registrytypes "github.com/docker/docker/api/types/registry"
"github.com/docker/docker/dockerversion"
"github.com/docker/docker/registry"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
var (
// supportedMediaTypes represents acceptable media-type(-prefixes)
// we use this list to prevent obscure errors when trying to pull
// OCI artifacts.
supportedMediaTypes = []string{
// valid prefixes
"application/vnd.oci.image",
"application/vnd.docker",
// these types may occur on old images, and are copied from
// defaultImageTypes below.
"application/octet-stream",
"application/json",
"text/html",
"",
}
// defaultImageTypes represents the schema2 config types for images
defaultImageTypes = []string{
schema2.MediaTypeImageConfig,
ocispec.MediaTypeImageConfig,
// Handle unexpected values from https://github.com/docker/distribution/issues/1621
// (see also https://github.com/docker/docker/issues/22378,
// https://github.com/docker/docker/issues/30083)
"application/octet-stream",
"application/json",
"text/html",
// Treat defaulted values as images, newer types cannot be implied
"",
}
// pluginTypes represents the schema2 config types for plugins
pluginTypes = []string{
schema2.MediaTypePluginConfig,
}
mediaTypeClasses map[string]string
)
func init() {
// initialize media type classes with all know types for images and plugins.
mediaTypeClasses = map[string]string{}
for _, t := range defaultImageTypes {
mediaTypeClasses[t] = "image"
}
for _, t := range pluginTypes {
mediaTypeClasses[t] = "plugin"
}
}
// newRepository returns a repository (v2 only). It creates an HTTP transport
// providing timeout settings and authentication support, and also verifies the
// remote API version.
func newRepository(
ctx context.Context, repoInfo *registry.RepositoryInfo, endpoint registry.APIEndpoint,
metaHeaders http.Header, authConfig *registrytypes.AuthConfig, actions ...string,
) (distribution.Repository, error) {
repoName := repoInfo.Name.Name()
// If endpoint does not support CanonicalName, use the RemoteName instead
if endpoint.TrimHostname {
repoName = reference.Path(repoInfo.Name)
}
direct := &net.Dialer{
Timeout: 30 * time.Second,
KeepAlive: 30 * time.Second,
}
// TODO(dmcgowan): Call close idle connections when complete, use keep alive
base := &http.Transport{
Proxy: http.ProxyFromEnvironment,
DialContext: direct.DialContext,
TLSHandshakeTimeout: 10 * time.Second,
TLSClientConfig: endpoint.TLSConfig,
// TODO(dmcgowan): Call close idle connections when complete and use keep alive
DisableKeepAlives: true,
}
modifiers := registry.Headers(dockerversion.DockerUserAgent(ctx), metaHeaders)
authTransport := transport.NewTransport(base, modifiers...)
challengeManager, err := registry.PingV2Registry(endpoint.URL, authTransport)
if err != nil {
transportOK := false
if responseErr, ok := err.(registry.PingResponseError); ok {
transportOK = true
err = responseErr.Err
}
return nil, fallbackError{
err: err,
transportOK: transportOK,
}
}
if authConfig.RegistryToken != "" {
modifiers = append(modifiers, auth.NewAuthorizer(challengeManager, &passThruTokenHandler{token: authConfig.RegistryToken}))
} else {
creds := registry.NewStaticCredentialStore(authConfig)
tokenHandler := auth.NewTokenHandlerWithOptions(auth.TokenHandlerOptions{
Transport: authTransport,
Credentials: creds,
Scopes: []auth.Scope{auth.RepositoryScope{
Repository: repoName,
Actions: actions,
}},
ClientID: registry.AuthClientID,
})
basicHandler := auth.NewBasicHandler(creds)
modifiers = append(modifiers, auth.NewAuthorizer(challengeManager, tokenHandler, basicHandler))
}
tr := transport.NewTransport(base, modifiers...)
repoNameRef, err := reference.WithName(repoName)
if err != nil {
return nil, fallbackError{
err: err,
transportOK: true,
}
}
repo, err := client.NewRepository(repoNameRef, endpoint.URL.String(), tr)
if err != nil {
return nil, fallbackError{
err: err,
transportOK: true,
}
}
return repo, nil
}
type passThruTokenHandler struct {
token string
}
func (th *passThruTokenHandler) Scheme() string {
return "bearer"
}
func (th *passThruTokenHandler) AuthorizeRequest(req *http.Request, params map[string]string) error {
req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", th.token))
return nil
}
|
