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moby--moby/distribution/registry_unit_test.go

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package distribution
import (
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"os"
"runtime"
"strings"
"testing"
"github.com/Sirupsen/logrus"
"github.com/docker/distribution/reference"
"github.com/docker/docker/api/types"
registrytypes "github.com/docker/docker/api/types/registry"
"github.com/docker/docker/pkg/archive"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/registry"
"golang.org/x/net/context"
)
const secretRegistryToken = "mysecrettoken"
type tokenPassThruHandler struct {
reached bool
gotToken bool
shouldSend401 func(url string) bool
}
func (h *tokenPassThruHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
h.reached = true
if strings.Contains(r.Header.Get("Authorization"), secretRegistryToken) {
logrus.Debug("Detected registry token in auth header")
h.gotToken = true
}
if h.shouldSend401 == nil || h.shouldSend401(r.RequestURI) {
w.Header().Set("WWW-Authenticate", `Bearer realm="foorealm"`)
w.WriteHeader(401)
}
}
func testTokenPassThru(t *testing.T, ts *httptest.Server) {
tmp, err := testDirectory("")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmp)
uri, err := url.Parse(ts.URL)
if err != nil {
t.Fatalf("could not parse url from test server: %v", err)
}
endpoint := registry.APIEndpoint{
Mirror: false,
URL: uri,
Version: 2,
Official: false,
TrimHostname: false,
TLSConfig: nil,
}
n, _ := reference.ParseNormalizedNamed("testremotename")
repoInfo := &registry.RepositoryInfo{
Name: n,
Index: &registrytypes.IndexInfo{
Name: "testrepo",
Mirrors: nil,
Secure: false,
Official: false,
},
Official: false,
}
imagePullConfig := &ImagePullConfig{
Config: Config{
MetaHeaders: http.Header{},
AuthConfig: &types.AuthConfig{
RegistryToken: secretRegistryToken,
},
},
Schema2Types: ImageTypes,
}
puller, err := newPuller(endpoint, repoInfo, imagePullConfig)
if err != nil {
t.Fatal(err)
}
p := puller.(*v2Puller)
ctx := context.Background()
p.repo, _, err = NewV2Repository(ctx, p.repoInfo, p.endpoint, p.config.MetaHeaders, p.config.AuthConfig, "pull")
if err != nil {
t.Fatal(err)
}
logrus.Debug("About to pull")
// We expect it to fail, since we haven't mock'd the full registry exchange in our handler above
tag, _ := reference.WithTag(n, "tag_goes_here")
_ = p.pullV2Repository(ctx, tag)
}
func TestTokenPassThru(t *testing.T) {
handler := &tokenPassThruHandler{shouldSend401: func(url string) bool { return url == "/v2/" }}
ts := httptest.NewServer(handler)
defer ts.Close()
testTokenPassThru(t, ts)
if !handler.reached {
t.Fatal("Handler not reached")
}
if !handler.gotToken {
t.Fatal("Failed to receive registry token")
}
}
func TestTokenPassThruDifferentHost(t *testing.T) {
handler := new(tokenPassThruHandler)
ts := httptest.NewServer(handler)
defer ts.Close()
tsredirect := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.RequestURI == "/v2/" {
w.Header().Set("WWW-Authenticate", `Bearer realm="foorealm"`)
w.WriteHeader(401)
return
}
http.Redirect(w, r, ts.URL+r.URL.Path, http.StatusMovedPermanently)
}))
defer tsredirect.Close()
testTokenPassThru(t, tsredirect)
if !handler.reached {
t.Fatal("Handler not reached")
}
if handler.gotToken {
t.Fatal("Redirect should not forward Authorization header to another host")
}
}
// testDirectory creates a new temporary directory and returns its path.
// The contents of directory at path `templateDir` is copied into the
// new directory.
func testDirectory(templateDir string) (dir string, err error) {
testID := stringid.GenerateNonCryptoID()[:4]
prefix := fmt.Sprintf("docker-test%s-%s-", testID, getCallerName(2))
if prefix == "" {
prefix = "docker-test-"
}
dir, err = ioutil.TempDir("", prefix)
if err = os.Remove(dir); err != nil {
return
}
if templateDir != "" {
if err = archive.CopyWithTar(templateDir, dir); err != nil {
return
}
}
return
}
// getCallerName introspects the call stack and returns the name of the
// function `depth` levels down in the stack.
func getCallerName(depth int) string {
// Use the caller function name as a prefix.
// This helps trace temp directories back to their test.
pc, _, _, _ := runtime.Caller(depth + 1)
callerLongName := runtime.FuncForPC(pc).Name()
parts := strings.Split(callerLongName, ".")
callerShortName := parts[len(parts)-1]
return callerShortName
}