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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
// Copyright 2015 go-dockerclient authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package docker
import (
"bytes"
"encoding/base64"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"path"
"strings"
)
// ErrCannotParseDockercfg is the error returned by NewAuthConfigurations when the dockercfg cannot be parsed.
var ErrCannotParseDockercfg = errors.New("failed to read authentication from dockercfg")
// AuthConfiguration represents authentication options to use in the PushImage
// method. It represents the authentication in the Docker index server.
type AuthConfiguration struct {
Username string `json:"username,omitempty"`
Password string `json:"password,omitempty"`
Email string `json:"email,omitempty"`
ServerAddress string `json:"serveraddress,omitempty"`
// IdentityToken can be supplied with the identitytoken response of the AuthCheck call
// see https://godoc.org/github.com/docker/docker/api/types#AuthConfig
// It can be used in place of password not in conjunction with it
IdentityToken string `json:"identitytoken,omitempty"`
// RegistryToken can be supplied with the registrytoken
RegistryToken string `json:"registrytoken,omitempty"`
}
func (c AuthConfiguration) isEmpty() bool {
return c == AuthConfiguration{}
}
func (c AuthConfiguration) headerKey() string {
return "X-Registry-Auth"
}
// AuthConfigurations represents authentication options to use for the
// PushImage method accommodating the new X-Registry-Config header
type AuthConfigurations struct {
Configs map[string]AuthConfiguration `json:"configs"`
}
func (c AuthConfigurations) isEmpty() bool {
return len(c.Configs) == 0
}
func (c AuthConfigurations) headerKey() string {
return "X-Registry-Config"
}
// AuthConfigurations119 is used to serialize a set of AuthConfigurations
// for Docker API >= 1.19.
type AuthConfigurations119 map[string]AuthConfiguration
func (c AuthConfigurations119) isEmpty() bool {
return len(c) == 0
}
func (c AuthConfigurations119) headerKey() string {
return "X-Registry-Config"
}
// dockerConfig represents a registry authentation configuration from the
// .dockercfg file.
type dockerConfig struct {
Auth string `json:"auth"`
Email string `json:"email"`
IdentityToken string `json:"identitytoken"`
RegistryToken string `json:"registrytoken"`
}
// NewAuthConfigurationsFromFile returns AuthConfigurations from a path containing JSON
// in the same format as the .dockercfg file.
func NewAuthConfigurationsFromFile(path string) (*AuthConfigurations, error) {
r, err := os.Open(path)
if err != nil {
return nil, err
}
return NewAuthConfigurations(r)
}
func cfgPaths(dockerConfigEnv string, homeEnv string) []string {
var paths []string
if dockerConfigEnv != "" {
paths = append(paths, path.Join(dockerConfigEnv, "plaintext-passwords.json"))
paths = append(paths, path.Join(dockerConfigEnv, "config.json"))
}
if homeEnv != "" {
paths = append(paths, path.Join(homeEnv, ".docker", "plaintext-passwords.json"))
paths = append(paths, path.Join(homeEnv, ".docker", "config.json"))
paths = append(paths, path.Join(homeEnv, ".dockercfg"))
}
return paths
}
// NewAuthConfigurationsFromDockerCfg returns AuthConfigurations from
// system config files. The following files are checked in the order listed:
// - $DOCKER_CONFIG/config.json if DOCKER_CONFIG set in the environment,
// - $HOME/.docker/config.json
// - $HOME/.dockercfg
func NewAuthConfigurationsFromDockerCfg() (*AuthConfigurations, error) {
err := fmt.Errorf("no docker configuration found")
var auths *AuthConfigurations
pathsToTry := cfgPaths(os.Getenv("DOCKER_CONFIG"), os.Getenv("HOME"))
for _, path := range pathsToTry {
auths, err = NewAuthConfigurationsFromFile(path)
if err == nil {
return auths, nil
}
}
return auths, err
}
// NewAuthConfigurations returns AuthConfigurations from a JSON encoded string in the
// same format as the .dockercfg file.
func NewAuthConfigurations(r io.Reader) (*AuthConfigurations, error) {
var auth *AuthConfigurations
confs, err := parseDockerConfig(r)
if err != nil {
return nil, err
}
auth, err = authConfigs(confs)
if err != nil {
return nil, err
}
return auth, nil
}
func parseDockerConfig(r io.Reader) (map[string]dockerConfig, error) {
buf := new(bytes.Buffer)
buf.ReadFrom(r)
byteData := buf.Bytes()
confsWrapper := struct {
Auths map[string]dockerConfig `json:"auths"`
}{}
if err := json.Unmarshal(byteData, &confsWrapper); err == nil {
if len(confsWrapper.Auths) > 0 {
return confsWrapper.Auths, nil
}
}
var confs map[string]dockerConfig
if err := json.Unmarshal(byteData, &confs); err != nil {
return nil, err
}
return confs, nil
}
// authConfigs converts a dockerConfigs map to a AuthConfigurations object.
func authConfigs(confs map[string]dockerConfig) (*AuthConfigurations, error) {
c := &AuthConfigurations{
Configs: make(map[string]AuthConfiguration),
}
for reg, conf := range confs {
if conf.Auth == "" {
continue
}
data, err := base64.StdEncoding.DecodeString(conf.Auth)
if err != nil {
return nil, err
}
userpass := strings.SplitN(string(data), ":", 2)
if len(userpass) != 2 {
return nil, ErrCannotParseDockercfg
}
authConfig := AuthConfiguration{
Email: conf.Email,
Username: userpass[0],
Password: userpass[1],
ServerAddress: reg,
}
// if identitytoken provided then zero the password and set it
if conf.IdentityToken != "" {
authConfig.Password = ""
authConfig.IdentityToken = conf.IdentityToken
}
// if registrytoken provided then zero the password and set it
if conf.RegistryToken != "" {
authConfig.Password = ""
authConfig.RegistryToken = conf.RegistryToken
}
c.Configs[reg] = authConfig
}
return c, nil
}
// AuthStatus returns the authentication status for Docker API versions >= 1.23.
type AuthStatus struct {
Status string `json:"Status,omitempty" yaml:"Status,omitempty" toml:"Status,omitempty"`
IdentityToken string `json:"IdentityToken,omitempty" yaml:"IdentityToken,omitempty" toml:"IdentityToken,omitempty"`
}
// AuthCheck validates the given credentials. It returns nil if successful.
//
// For Docker API versions >= 1.23, the AuthStatus struct will be populated, otherwise it will be empty.`
//
// See https://goo.gl/6nsZkH for more details.
func (c *Client) AuthCheck(conf *AuthConfiguration) (AuthStatus, error) {
var authStatus AuthStatus
if conf == nil {
return authStatus, errors.New("conf is nil")
}
resp, err := c.do("POST", "/auth", doOptions{data: conf})
if err != nil {
return authStatus, err
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return authStatus, err
}
if len(data) == 0 {
return authStatus, nil
}
if err := json.Unmarshal(data, &authStatus); err != nil {
return authStatus, err
}
return authStatus, nil
}
|
