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package proxy
import (
"net/http"
"net/url"
"strings"
"github.com/docker/distribution/context"
"github.com/docker/distribution/registry/client/auth"
"github.com/docker/distribution/registry/client/auth/challenge"
)
const challengeHeader = "Docker-Distribution-Api-Version"
type userpass struct {
username string
password string
}
type credentials struct {
creds map[string]userpass
}
func (c credentials) Basic(u *url.URL) (string, string) {
up := c.creds[u.String()]
return up.username, up.password
}
func (c credentials) RefreshToken(u *url.URL, service string) string {
return ""
}
func (c credentials) SetRefreshToken(u *url.URL, service, token string) {
}
// configureAuth stores credentials for challenge responses
func configureAuth(username, password, remoteURL string) (auth.CredentialStore, error) {
creds := map[string]userpass{}
authURLs, err := getAuthURLs(remoteURL)
if err != nil {
return nil, err
}
for _, url := range authURLs {
context.GetLogger(context.Background()).Infof("Discovered token authentication URL: %s", url)
creds[url] = userpass{
username: username,
password: password,
}
}
return credentials{creds: creds}, nil
}
func getAuthURLs(remoteURL string) ([]string, error) {
authURLs := []string{}
resp, err := http.Get(remoteURL + "/v2/")
if err != nil {
return nil, err
}
defer resp.Body.Close()
for _, c := range challenge.ResponseChallenges(resp) {
if strings.EqualFold(c.Scheme, "bearer") {
authURLs = append(authURLs, c.Parameters["realm"])
}
}
return authURLs, nil
}
func ping(manager challenge.Manager, endpoint, versionHeader string) error {
resp, err := http.Get(endpoint)
if err != nil {
return err
}
defer resp.Body.Close()
return manager.AddResponse(resp)
}
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