137 lines
3.7 KiB
Go
137 lines
3.7 KiB
Go
// 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"
|
|
"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"`
|
|
}
|
|
|
|
// 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"`
|
|
}
|
|
|
|
// AuthConfigurations119 is used to serialize a set of AuthConfigurations
|
|
// for Docker API >= 1.19.
|
|
type AuthConfigurations119 map[string]AuthConfiguration
|
|
|
|
// dockerConfig represents a registry authentation configuration from the
|
|
// .dockercfg file.
|
|
type dockerConfig struct {
|
|
Auth string `json:"auth"`
|
|
Email string `json:"email"`
|
|
}
|
|
|
|
// NewAuthConfigurationsFromDockerCfg returns AuthConfigurations from the
|
|
// ~/.dockercfg file.
|
|
func NewAuthConfigurationsFromDockerCfg() (*AuthConfigurations, error) {
|
|
var r io.Reader
|
|
var err error
|
|
p := path.Join(os.Getenv("HOME"), ".docker", "config.json")
|
|
r, err = os.Open(p)
|
|
if err != nil {
|
|
p := path.Join(os.Getenv("HOME"), ".dockercfg")
|
|
r, err = os.Open(p)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return NewAuthConfigurations(r)
|
|
}
|
|
|
|
// 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()
|
|
|
|
var confsWrapper map[string]map[string]dockerConfig
|
|
if err := json.Unmarshal(byteData, &confsWrapper); err == nil {
|
|
if confs, ok := confsWrapper["auths"]; ok {
|
|
return confs, 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 {
|
|
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
|
|
}
|
|
c.Configs[reg] = AuthConfiguration{
|
|
Email: conf.Email,
|
|
Username: userpass[0],
|
|
Password: userpass[1],
|
|
ServerAddress: reg,
|
|
}
|
|
}
|
|
return c, nil
|
|
}
|
|
|
|
// AuthCheck validates the given credentials. It returns nil if successful.
|
|
//
|
|
// See https://goo.gl/m2SleN for more details.
|
|
func (c *Client) AuthCheck(conf *AuthConfiguration) error {
|
|
if conf == nil {
|
|
return fmt.Errorf("conf is nil")
|
|
}
|
|
resp, err := c.do("POST", "/auth", doOptions{data: conf})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
resp.Body.Close()
|
|
return nil
|
|
}
|