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
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
package registry // import "github.com/docker/docker/registry"
import (
"net/http"
"net/url"
"strings"
"time"
"github.com/docker/distribution/registry/client/auth"
"github.com/docker/distribution/registry/client/auth/challenge"
"github.com/docker/distribution/registry/client/transport"
"github.com/docker/docker/api/types/registry"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// AuthClientID is used the ClientID used for the token server
const AuthClientID = "docker"
type loginCredentialStore struct {
authConfig *registry.AuthConfig
}
func (lcs loginCredentialStore) Basic(*url.URL) (string, string) {
return lcs.authConfig.Username, lcs.authConfig.Password
}
func (lcs loginCredentialStore) RefreshToken(*url.URL, string) string {
return lcs.authConfig.IdentityToken
}
func (lcs loginCredentialStore) SetRefreshToken(u *url.URL, service, token string) {
lcs.authConfig.IdentityToken = token
}
type staticCredentialStore struct {
auth *registry.AuthConfig
}
// NewStaticCredentialStore returns a credential store
// which always returns the same credential values.
func NewStaticCredentialStore(auth *registry.AuthConfig) auth.CredentialStore {
return staticCredentialStore{
auth: auth,
}
}
func (scs staticCredentialStore) Basic(*url.URL) (string, string) {
if scs.auth == nil {
return "", ""
}
return scs.auth.Username, scs.auth.Password
}
func (scs staticCredentialStore) RefreshToken(*url.URL, string) string {
if scs.auth == nil {
return ""
}
return scs.auth.IdentityToken
}
func (scs staticCredentialStore) SetRefreshToken(*url.URL, string, string) {
}
// loginV2 tries to login to the v2 registry server. The given registry
// endpoint will be pinged to get authorization challenges. These challenges
// will be used to authenticate against the registry to validate credentials.
func loginV2(authConfig *registry.AuthConfig, endpoint APIEndpoint, userAgent string) (string, string, error) {
var (
endpointStr = strings.TrimRight(endpoint.URL.String(), "/") + "/v2/"
modifiers = Headers(userAgent, nil)
authTransport = transport.NewTransport(newTransport(endpoint.TLSConfig), modifiers...)
credentialAuthConfig = *authConfig
creds = loginCredentialStore{authConfig: &credentialAuthConfig}
)
logrus.Debugf("attempting v2 login to registry endpoint %s", endpointStr)
loginClient, err := v2AuthHTTPClient(endpoint.URL, authTransport, modifiers, creds, nil)
if err != nil {
return "", "", err
}
req, err := http.NewRequest(http.MethodGet, endpointStr, nil)
if err != nil {
return "", "", err
}
resp, err := loginClient.Do(req)
if err != nil {
err = translateV2AuthError(err)
return "", "", err
}
defer resp.Body.Close()
if resp.StatusCode == http.StatusOK {
return "Login Succeeded", credentialAuthConfig.IdentityToken, nil
}
// TODO(dmcgowan): Attempt to further interpret result, status code and error code string
return "", "", errors.Errorf("login attempt to %s failed with status: %d %s", endpointStr, resp.StatusCode, http.StatusText(resp.StatusCode))
}
func v2AuthHTTPClient(endpoint *url.URL, authTransport http.RoundTripper, modifiers []transport.RequestModifier, creds auth.CredentialStore, scopes []auth.Scope) (*http.Client, error) {
challengeManager, err := PingV2Registry(endpoint, authTransport)
if err != nil {
return nil, err
}
tokenHandlerOptions := auth.TokenHandlerOptions{
Transport: authTransport,
Credentials: creds,
OfflineAccess: true,
ClientID: AuthClientID,
Scopes: scopes,
}
tokenHandler := auth.NewTokenHandlerWithOptions(tokenHandlerOptions)
basicHandler := auth.NewBasicHandler(creds)
modifiers = append(modifiers, auth.NewAuthorizer(challengeManager, tokenHandler, basicHandler))
return &http.Client{
Transport: transport.NewTransport(authTransport, modifiers...),
Timeout: 15 * time.Second,
}, nil
}
// ConvertToHostname converts a registry url which has http|https prepended
// to just an hostname.
func ConvertToHostname(url string) string {
stripped := url
if strings.HasPrefix(url, "http://") {
stripped = strings.TrimPrefix(url, "http://")
} else if strings.HasPrefix(url, "https://") {
stripped = strings.TrimPrefix(url, "https://")
}
return strings.SplitN(stripped, "/", 2)[0]
}
// ResolveAuthConfig matches an auth configuration to a server address or a URL
func ResolveAuthConfig(authConfigs map[string]registry.AuthConfig, index *registry.IndexInfo) registry.AuthConfig {
configKey := GetAuthConfigKey(index)
// First try the happy case
if c, found := authConfigs[configKey]; found || index.Official {
return c
}
// Maybe they have a legacy config file, we will iterate the keys converting
// them to the new format and testing
for registry, ac := range authConfigs {
if configKey == ConvertToHostname(registry) {
return ac
}
}
// When all else fails, return an empty auth config
return registry.AuthConfig{}
}
// PingResponseError is used when the response from a ping
// was received but invalid.
type PingResponseError struct {
Err error
}
func (err PingResponseError) Error() string {
return err.Err.Error()
}
// PingV2Registry attempts to ping a v2 registry and on success return a
// challenge manager for the supported authentication types.
// If a response is received but cannot be interpreted, a PingResponseError will be returned.
func PingV2Registry(endpoint *url.URL, transport http.RoundTripper) (challenge.Manager, error) {
pingClient := &http.Client{
Transport: transport,
Timeout: 15 * time.Second,
}
endpointStr := strings.TrimRight(endpoint.String(), "/") + "/v2/"
req, err := http.NewRequest(http.MethodGet, endpointStr, nil)
if err != nil {
return nil, err
}
resp, err := pingClient.Do(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
challengeManager := challenge.NewSimpleManager()
if err := challengeManager.AddResponse(resp); err != nil {
return nil, PingResponseError{
Err: err,
}
}
return challengeManager, nil
}
|
