[ARVADOS] updated: 1.3.0-2614-g075b0bca2

Git user git at public.arvados.org
Thu Jun 4 15:45:26 UTC 2020


Summary of changes:
 lib/config/config.default.yml             | 12 +++++
 lib/config/generated_config.go            | 12 +++++
 lib/controller/localdb/login.go           | 22 ++++++++-
 lib/controller/localdb/login_oidc.go      | 79 ++++++++++++++++---------------
 lib/controller/localdb/login_oidc_test.go | 47 ++++++++++++++++--
 5 files changed, 130 insertions(+), 42 deletions(-)

       via  075b0bca20ddbbde3210949ebf8012e49e5317f4 (commit)
       via  c53df2193d573bec0c534a7bf80af578d4d57502 (commit)
       via  18de6db7e6f2336d69aad9dad7691ed123bec509 (commit)
      from  15dbaf151a72d5cfc00b4ea4b4bcb64c7ed9ac14 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
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commit 075b0bca20ddbbde3210949ebf8012e49e5317f4
Author: Tom Clegg <tom at tomclegg.ca>
Date:   Thu Jun 4 11:44:29 2020 -0400

    16171: Warn about OIDC issuer URL spelling sensitivity.
    
    Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom at tomclegg.ca>

diff --git a/lib/config/config.default.yml b/lib/config/config.default.yml
index d1c47f4a2..be0123574 100644
--- a/lib/config/config.default.yml
+++ b/lib/config/config.default.yml
@@ -556,6 +556,18 @@ Clusters:
         Enable: false
 
         # Issuer URL, e.g., "https://login.example.com".
+        #
+        # This must be exactly equal to the URL returned by the issuer
+        # itself in its config response ("isser" key). If the
+        # configured value is "https://example" and the provider
+        # returns "https://example:443" then login will fail, even
+        # though those URLs are equivalent (RFC3986).
+        #
+        # If the configured URL's path component is just "/" then it
+        # is stripped. Therefore, an issuer advertising itself as
+        # "https://example/" cannot be used -- but "https://example",
+        # "https://example/foo", and "https://example/foo/" are
+        # supported.
         Issuer: ""
 
         # Your client ID and client secret (supplied by the provider).
diff --git a/lib/config/generated_config.go b/lib/config/generated_config.go
index 0dda58db0..49d86c77f 100644
--- a/lib/config/generated_config.go
+++ b/lib/config/generated_config.go
@@ -562,6 +562,18 @@ Clusters:
         Enable: false
 
         # Issuer URL, e.g., "https://login.example.com".
+        #
+        # This must be exactly equal to the URL returned by the issuer
+        # itself in its config response ("isser" key). If the
+        # configured value is "https://example" and the provider
+        # returns "https://example:443" then login will fail, even
+        # though those URLs are equivalent (RFC3986).
+        #
+        # If the configured URL's path component is just "/" then it
+        # is stripped. Therefore, an issuer advertising itself as
+        # "https://example/" cannot be used -- but "https://example",
+        # "https://example/foo", and "https://example/foo/" are
+        # supported.
         Issuer: ""
 
         # Your client ID and client secret (supplied by the provider).

commit c53df2193d573bec0c534a7bf80af578d4d57502
Author: Tom Clegg <tom at tomclegg.ca>
Date:   Thu Jun 4 11:21:43 2020 -0400

    16171: Test non-Google OIDC login with fake issuer.
    
    Ensures the proper credentials are used.
    
    Exposes go-oidc's sensitivity to different spellings of equivalent
    issuer URLs.
    
    Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom at tomclegg.ca>

diff --git a/lib/controller/localdb/login.go b/lib/controller/localdb/login.go
index 5231bcb19..04fb82bd5 100644
--- a/lib/controller/localdb/login.go
+++ b/lib/controller/localdb/login.go
@@ -39,10 +39,30 @@ func chooseLoginController(cluster *arvados.Cluster, railsProxy *railsProxy) log
 			UseGooglePeopleAPI: cluster.Login.Google.AlternateEmailAddresses,
 		}
 	case !wantGoogle && wantOpenIDConnect && !wantSSO && !wantPAM && !wantLDAP:
+		issuer := cluster.Login.OpenIDConnect.Issuer
+		if issuer.Path == "/" {
+			// The OIDC library returns an error if the
+			// config says "https://example/" and the
+			// issuer identifies itself as
+			// "https://example", even though those URLs
+			// are equivalent
+			// (https://tools.ietf.org/html/rfc3986#section-6.2.3).
+			//
+			// Our config loader adds "/" to URLs with
+			// empty path, so we strip it off here and
+			// count on the issuer to do the same when
+			// identifying itself, as Google does.
+			//
+			// (Non-empty paths as in
+			// "https://example/foo/" are preserved by the
+			// config loader so the config just has to
+			// match the issuer's response.)
+			issuer.Path = ""
+		}
 		return &oidcLoginController{
 			Cluster:      cluster,
 			RailsProxy:   railsProxy,
-			Issuer:       cluster.Login.OpenIDConnect.Issuer.String(),
+			Issuer:       issuer.String(),
 			ClientID:     cluster.Login.OpenIDConnect.ClientID,
 			ClientSecret: cluster.Login.OpenIDConnect.ClientSecret,
 		}
diff --git a/lib/controller/localdb/login_oidc_test.go b/lib/controller/localdb/login_oidc_test.go
index 4a3a2a5ee..52b45dced 100644
--- a/lib/controller/localdb/login_oidc_test.go
+++ b/lib/controller/localdb/login_oidc_test.go
@@ -9,6 +9,7 @@ import (
 	"context"
 	"crypto/rand"
 	"crypto/rsa"
+	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"net/http"
@@ -47,7 +48,9 @@ type OIDCLoginSuite struct {
 	issuerKey             *rsa.PrivateKey
 
 	// expected token request
-	validCode string
+	validCode         string
+	validClientID     string
+	validClientSecret string
 	// desired response from token endpoint
 	authEmail         string
 	authEmailVerified bool
@@ -83,13 +86,26 @@ func (s *OIDCLoginSuite) SetUpTest(c *check.C) {
 				"userinfo_endpoint":      s.fakeIssuer.URL + "/userinfo",
 			})
 		case "/token":
+			var clientID, clientSecret string
+			auth, _ := base64.StdEncoding.DecodeString(strings.TrimPrefix(req.Header.Get("Authorization"), "Basic "))
+			authsplit := strings.Split(string(auth), ":")
+			if len(authsplit) == 2 {
+				clientID, _ = url.QueryUnescape(authsplit[0])
+				clientSecret, _ = url.QueryUnescape(authsplit[1])
+			}
+			if clientID != s.validClientID || clientSecret != s.validClientSecret {
+				c.Logf("fakeIssuer: expected (%q, %q) got (%q, %q)", s.validClientID, s.validClientSecret, clientID, clientSecret)
+				w.WriteHeader(http.StatusUnauthorized)
+				return
+			}
+
 			if req.Form.Get("code") != s.validCode || s.validCode == "" {
 				w.WriteHeader(http.StatusUnauthorized)
 				return
 			}
 			idToken, _ := json.Marshal(map[string]interface{}{
 				"iss":            s.fakeIssuer.URL,
-				"aud":            []string{"test%client$id"},
+				"aud":            []string{clientID},
 				"sub":            "fake-user-id",
 				"exp":            time.Now().UTC().Add(time.Minute).Unix(),
 				"iat":            time.Now().UTC().Unix(),
@@ -145,13 +161,16 @@ func (s *OIDCLoginSuite) SetUpTest(c *check.C) {
 	s.fakePeopleAPIResponse = map[string]interface{}{}
 
 	cfg, err := config.NewLoader(nil, ctxlog.TestLogger(c)).Load()
+	c.Assert(err, check.IsNil)
 	s.cluster, err = cfg.GetCluster("")
+	c.Assert(err, check.IsNil)
 	s.cluster.Login.SSO.Enable = false
 	s.cluster.Login.Google.Enable = true
 	s.cluster.Login.Google.ClientID = "test%client$id"
 	s.cluster.Login.Google.ClientSecret = "test#client/secret"
 	s.cluster.Users.PreferDomainForUsername = "PreferDomainForUsername.example.com"
-	c.Assert(err, check.IsNil)
+	s.validClientID = "test%client$id"
+	s.validClientSecret = "test#client/secret"
 
 	s.localdb = NewConn(s.cluster)
 	c.Assert(s.localdb.loginController, check.FitsTypeOf, (*oidcLoginController)(nil))
@@ -280,6 +299,28 @@ func (s *OIDCLoginSuite) TestGoogleLogin_PeopleAPIError(c *check.C) {
 	c.Check(resp.RedirectLocation, check.Equals, "")
 }
 
+func (s *OIDCLoginSuite) TestOIDCLogin_Success(c *check.C) {
+	s.cluster.Login.Google.Enable = false
+	s.cluster.Login.OpenIDConnect.Enable = true
+	json.Unmarshal([]byte(fmt.Sprintf("%q", s.fakeIssuer.URL)), &s.cluster.Login.OpenIDConnect.Issuer)
+	s.cluster.Login.OpenIDConnect.ClientID = "oidc#client#id"
+	s.cluster.Login.OpenIDConnect.ClientSecret = "oidc#client#secret"
+	s.validClientID = "oidc#client#id"
+	s.validClientSecret = "oidc#client#secret"
+	s.localdb = NewConn(s.cluster)
+	state := s.startLogin(c)
+	resp, err := s.localdb.Login(context.Background(), arvados.LoginOptions{
+		Code:  s.validCode,
+		State: state,
+	})
+	c.Assert(err, check.IsNil)
+	c.Check(resp.HTML.String(), check.Equals, "")
+	target, err := url.Parse(resp.RedirectLocation)
+	c.Assert(err, check.IsNil)
+	token := target.Query().Get("api_token")
+	c.Check(token, check.Matches, `v2/zzzzz-gj3su-.{15}/.{32,50}`)
+}
+
 func (s *OIDCLoginSuite) TestGoogleLogin_Success(c *check.C) {
 	state := s.startLogin(c)
 	resp, err := s.localdb.Login(context.Background(), arvados.LoginOptions{

commit 18de6db7e6f2336d69aad9dad7691ed123bec509
Author: Tom Clegg <tom at tomclegg.ca>
Date:   Thu Jun 4 09:54:35 2020 -0400

    16171: Move more code to one-time setup func.
    
    Fix Google credentials used for non-Google OIDC provider.
    
    Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tom at tomclegg.ca>

diff --git a/lib/controller/localdb/login_oidc.go b/lib/controller/localdb/login_oidc.go
index b0458a7ad..f42b8f8be 100644
--- a/lib/controller/localdb/login_oidc.go
+++ b/lib/controller/localdb/login_oidc.go
@@ -38,22 +38,45 @@ type oidcLoginController struct {
 	ClientSecret       string
 	UseGooglePeopleAPI bool // Use Google People API to look up alternate email addresses
 
-	peopleAPIBasePath string // override Google People API base URL (normally empty, set by google pkg to https://people.googleapis.com/)
-	provider          *oidc.Provider
-	mu                sync.Mutex
+	// override Google People API base URL for testing purposes
+	// (normally empty, set by google pkg to
+	// https://people.googleapis.com/)
+	peopleAPIBasePath string
+
+	provider   *oidc.Provider        // initialized by setup()
+	oauth2conf *oauth2.Config        // initialized by setup()
+	verifier   *oidc.IDTokenVerifier // initialized by setup()
+	mu         sync.Mutex            // protects setup()
 }
 
-func (ctrl *oidcLoginController) getProvider() (*oidc.Provider, error) {
+// Initialize ctrl.provider and ctrl.oauth2conf.
+func (ctrl *oidcLoginController) setup() error {
 	ctrl.mu.Lock()
 	defer ctrl.mu.Unlock()
-	if ctrl.provider == nil {
-		provider, err := oidc.NewProvider(context.Background(), ctrl.Issuer)
-		if err != nil {
-			return nil, err
-		}
-		ctrl.provider = provider
+	if ctrl.provider != nil {
+		// already set up
+		return nil
+	}
+	redirURL, err := (*url.URL)(&ctrl.Cluster.Services.Controller.ExternalURL).Parse("/" + arvados.EndpointLogin.Path)
+	if err != nil {
+		return fmt.Errorf("error making redirect URL: %s", err)
+	}
+	provider, err := oidc.NewProvider(context.Background(), ctrl.Issuer)
+	if err != nil {
+		return err
+	}
+	ctrl.oauth2conf = &oauth2.Config{
+		ClientID:     ctrl.ClientID,
+		ClientSecret: ctrl.ClientSecret,
+		Endpoint:     provider.Endpoint(),
+		Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
+		RedirectURL:  redirURL.String(),
 	}
-	return ctrl.provider, nil
+	ctrl.verifier = provider.Verifier(&oidc.Config{
+		ClientID: ctrl.ClientID,
+	})
+	ctrl.provider = provider
+	return nil
 }
 
 func (ctrl *oidcLoginController) Logout(ctx context.Context, opts arvados.LogoutOptions) (arvados.LogoutResponse, error) {
@@ -61,38 +84,18 @@ func (ctrl *oidcLoginController) Logout(ctx context.Context, opts arvados.Logout
 }
 
 func (ctrl *oidcLoginController) Login(ctx context.Context, opts arvados.LoginOptions) (arvados.LoginResponse, error) {
-	provider, err := ctrl.getProvider()
+	err := ctrl.setup()
 	if err != nil {
 		return loginError(fmt.Errorf("error setting up OpenID Connect provider: %s", err))
 	}
-	redirURL, err := (*url.URL)(&ctrl.Cluster.Services.Controller.ExternalURL).Parse("/login")
-	if err != nil {
-		return loginError(fmt.Errorf("error making redirect URL: %s", err))
-	}
-	conf := &oauth2.Config{
-		ClientID:     ctrl.Cluster.Login.Google.ClientID,
-		ClientSecret: ctrl.Cluster.Login.Google.ClientSecret,
-		Endpoint:     provider.Endpoint(),
-		Scopes:       []string{oidc.ScopeOpenID, "profile", "email"},
-		RedirectURL:  redirURL.String(),
-	}
-	verifier := provider.Verifier(&oidc.Config{
-		ClientID: conf.ClientID,
-	})
 	if opts.State == "" {
 		// Initiate OIDC sign-in.
 		if opts.ReturnTo == "" {
 			return loginError(errors.New("missing return_to parameter"))
 		}
-		me := url.URL(ctrl.Cluster.Services.Controller.ExternalURL)
-		callback, err := me.Parse("/" + arvados.EndpointLogin.Path)
-		if err != nil {
-			return loginError(err)
-		}
-		conf.RedirectURL = callback.String()
 		state := ctrl.newOAuth2State([]byte(ctrl.Cluster.SystemRootToken), opts.Remote, opts.ReturnTo)
 		return arvados.LoginResponse{
-			RedirectLocation: conf.AuthCodeURL(state.String(),
+			RedirectLocation: ctrl.oauth2conf.AuthCodeURL(state.String(),
 				// prompt=select_account tells Google
 				// to show the "choose which Google
 				// account" page, even if the client
@@ -106,7 +109,7 @@ func (ctrl *oidcLoginController) Login(ctx context.Context, opts arvados.LoginOp
 		if !state.verify([]byte(ctrl.Cluster.SystemRootToken)) {
 			return loginError(errors.New("invalid OAuth2 state"))
 		}
-		oauth2Token, err := conf.Exchange(ctx, opts.Code)
+		oauth2Token, err := ctrl.oauth2conf.Exchange(ctx, opts.Code)
 		if err != nil {
 			return loginError(fmt.Errorf("error in OAuth2 exchange: %s", err))
 		}
@@ -114,11 +117,11 @@ func (ctrl *oidcLoginController) Login(ctx context.Context, opts arvados.LoginOp
 		if !ok {
 			return loginError(errors.New("error in OAuth2 exchange: no ID token in OAuth2 token"))
 		}
-		idToken, err := verifier.Verify(ctx, rawIDToken)
+		idToken, err := ctrl.verifier.Verify(ctx, rawIDToken)
 		if err != nil {
 			return loginError(fmt.Errorf("error verifying ID token: %s", err))
 		}
-		authinfo, err := ctrl.getAuthInfo(ctx, ctrl.Cluster, conf, oauth2Token, idToken)
+		authinfo, err := ctrl.getAuthInfo(ctx, oauth2Token, idToken)
 		if err != nil {
 			return loginError(err)
 		}
@@ -138,7 +141,7 @@ func (ctrl *oidcLoginController) UserAuthenticate(ctx context.Context, opts arva
 // primary address at index 0. The provided defaultAddr is always
 // included in the returned slice, and is used as the primary if the
 // Google API does not indicate one.
-func (ctrl *oidcLoginController) getAuthInfo(ctx context.Context, cluster *arvados.Cluster, conf *oauth2.Config, token *oauth2.Token, idToken *oidc.IDToken) (*rpc.UserSessionAuthInfo, error) {
+func (ctrl *oidcLoginController) getAuthInfo(ctx context.Context, token *oauth2.Token, idToken *oidc.IDToken) (*rpc.UserSessionAuthInfo, error) {
 	var ret rpc.UserSessionAuthInfo
 	defer ctxlog.FromContext(ctx).WithField("ret", &ret).Debug("getAuthInfo returned")
 
@@ -168,7 +171,7 @@ func (ctrl *oidcLoginController) getAuthInfo(ctx context.Context, cluster *arvad
 		return &ret, nil
 	}
 
-	svc, err := people.NewService(ctx, option.WithTokenSource(conf.TokenSource(ctx, token)), option.WithScopes(people.UserEmailsReadScope))
+	svc, err := people.NewService(ctx, option.WithTokenSource(ctrl.oauth2conf.TokenSource(ctx, token)), option.WithScopes(people.UserEmailsReadScope))
 	if err != nil {
 		return nil, fmt.Errorf("error setting up People API: %s", err)
 	}

-----------------------------------------------------------------------


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