// Do watches for unauthorized challenges.  If we know to respond, we respond to the challenge
func (client *challengingClient) Do(req *http.Request) (*http.Response, error) {
	// Set custom header required by server to avoid CSRF attacks on browsers using basic auth
	if req.Header == nil {
		req.Header = http.Header{}
	}
	req.Header.Set(CSRFTokenHeader, "1")

	resp, err := client.delegate.Do(req)
	if err != nil {
		return nil, err
	}

	if resp.StatusCode == http.StatusUnauthorized {
		if wantsBasicAuth, realm := isBasicAuthChallenge(resp); wantsBasicAuth {
			username := client.defaultUsername
			password := client.defaultPassword

			missingUsername := len(username) == 0
			missingPassword := len(password) == 0

			url := *req.URL
			url.Path, url.RawQuery, url.Fragment = "", "", ""

			if (missingUsername || missingPassword) && client.reader != nil {
				fmt.Printf("Authentication required for %s (%s)\n", &url, realm)
				if missingUsername {
					username = util.PromptForString(client.reader, "Username: "******"Password: ")
				}
			}

			if len(username) > 0 || len(password) > 0 {
				client.delegate.Transport = kclient.NewBasicAuthRoundTripper(username, password, client.delegate.Transport)
				return client.delegate.Do(resp.Request)
			}
		}
	}
	return resp, err
}
Example #2
0
func TestAuthProxyOnAuthorize(t *testing.T) {
	testutil.DeleteAllEtcdKeys()

	// setup
	etcdClient := testutil.NewEtcdClient()
	etcdHelper, _ := master.NewEtcdStorage(etcdClient, latest.InterfacesFor, latest.Version, etcdtest.PathPrefix())

	accessTokenStorage := accesstokenetcd.NewREST(etcdHelper)
	accessTokenRegistry := accesstokenregistry.NewRegistry(accessTokenStorage)
	authorizeTokenStorage := authorizetokenetcd.NewREST(etcdHelper)
	authorizeTokenRegistry := authorizetokenregistry.NewRegistry(authorizeTokenStorage)
	clientStorage := clientetcd.NewREST(etcdHelper)
	clientRegistry := clientregistry.NewRegistry(clientStorage)
	clientAuthStorage := clientauthetcd.NewREST(etcdHelper)
	clientAuthRegistry := clientauthregistry.NewRegistry(clientAuthStorage)

	userStorage := useretcd.NewREST(etcdHelper)
	userRegistry := userregistry.NewRegistry(userStorage)
	identityStorage := identityetcd.NewREST(etcdHelper)
	identityRegistry := identityregistry.NewRegistry(identityStorage)

	identityMapper := identitymapper.NewAlwaysCreateUserIdentityToUserMapper(identityRegistry, userRegistry)

	// this auth request handler is the one that is supposed to recognize information from a front proxy
	authRequestHandler := headerrequest.NewAuthenticator("front-proxy-test", headerrequest.NewDefaultConfig(), identityMapper)
	authHandler := &oauthhandlers.EmptyAuth{}

	storage := registrystorage.New(accessTokenRegistry, authorizeTokenRegistry, clientRegistry, oauthregistry.NewUserConversion())
	config := osinserver.NewDefaultServerConfig()

	grantChecker := oauthregistry.NewClientAuthorizationGrantChecker(clientAuthRegistry)
	grantHandler := oauthhandlers.NewAutoGrant()

	server := osinserver.New(
		config,
		storage,
		osinserver.AuthorizeHandlers{
			oauthhandlers.NewAuthorizeAuthenticator(
				authRequestHandler,
				authHandler,
				oauthhandlers.EmptyError{},
			),
			oauthhandlers.NewGrantCheck(
				grantChecker,
				grantHandler,
				oauthhandlers.EmptyError{},
			),
		},
		osinserver.AccessHandlers{
			oauthhandlers.NewDenyAccessAuthenticator(),
		},
		osinserver.NewDefaultErrorHandler(),
	)

	mux := http.NewServeMux()
	server.Install(mux, origin.OpenShiftOAuthAPIPrefix)
	oauthServer := httptest.NewServer(http.Handler(mux))
	defer oauthServer.Close()
	t.Logf("oauth server is on %v\n", oauthServer.URL)

	// set up a front proxy guarding the oauth server
	proxyHTTPHandler := NewBasicAuthChallenger("TestRegistryAndServer", validUsers, NewXRemoteUserProxyingHandler(oauthServer.URL))
	proxyServer := httptest.NewServer(proxyHTTPHandler)
	defer proxyServer.Close()
	t.Logf("proxy server is on %v\n", proxyServer.URL)

	// need to prime clients so that we can get back a code.  the client must be valid
	createClient(t, clientRegistry, &oauthapi.OAuthClient{ObjectMeta: kapi.ObjectMeta{Name: "test"}, Secret: "secret", RedirectURIs: []string{oauthServer.URL}})

	// our simple URL to get back a code.  We want to go through the front proxy
	rawAuthorizeRequest := proxyServer.URL + origin.OpenShiftOAuthAPIPrefix + "/authorize?response_type=code&client_id=test"

	// the first request we make to the front proxy should challenge us for authentication info
	shouldBeAChallengeResponse, err := http.Get(rawAuthorizeRequest)
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}
	if shouldBeAChallengeResponse.StatusCode != http.StatusUnauthorized {
		t.Errorf("Expected Unauthorized, but got %v", shouldBeAChallengeResponse.StatusCode)
	}

	// create an http.Client to make our next request.  We need a custom Transport to authenticate us through our front proxy
	// and a custom CheckRedirect so that we can keep track of the redirect responses we're getting
	// OAuth requests a few redirects that we don't really care about checking, so this simpler than using a round tripper
	// and manually handling redirects and setting our auth information every time for the front proxy
	redirectedUrls := make([]url.URL, 10)
	httpClient := http.Client{
		CheckRedirect: getRedirectMethod(t, &redirectedUrls),
		Transport:     kclient.NewBasicAuthRoundTripper("sanefarmer", "who?", http.DefaultTransport),
	}

	// make our authorize request again, but this time our transport has properly set the auth info for the front proxy
	req, err := http.NewRequest("GET", rawAuthorizeRequest, nil)
	_, err = httpClient.Do(req)
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	// check the last redirect and see if we got a code
	foundCode := ""
	if len(redirectedUrls) > 0 {
		foundCode = redirectedUrls[len(redirectedUrls)-1].Query().Get("code")
	}

	if len(foundCode) == 0 {
		t.Errorf("Did not find code in any redirect: %v", redirectedUrls)
	} else {
		t.Logf("Found code %v\n", foundCode)
	}
}