login option for tokens

src/cmd/cli/command/commands.go

@@ -94,7 +94,6 @@ func Execute(ctx context.Context) error {
 		if strings.Contains(err.Error(), "config") {
 			printDefangHint("To manage sensitive service config, use:", "config")
 		}
-
 		if strings.Contains(err.Error(), "maximum number of projects") {
 			projectName := "<name>"
 			provider, err := newProvider(ctx, nil)
@@ -207,7 +206,8 @@ func SetupCommands(ctx context.Context, version string) {
 	RootCmd.AddCommand(tokenCmd)
 
 	// Login Command
-	loginCmd.Flags().Bool("training-opt-out", false, "Opt out of ML training (Pro users only)")
+	loginCmd.Flags().Bool("training-opt-out", false, "opt out of ML training (Pro users only)")
+	loginCmd.Flags().String("token", "", "access token to use for authentication")
 	// loginCmd.Flags().Bool("skip-prompt", false, "skip the login prompt if already logged in"); TODO: Implement this
 	RootCmd.AddCommand(loginCmd)
 
@@ -396,9 +396,10 @@ var loginCmd = &cobra.Command{
 	Short: "Authenticate to Defang",
 	RunE: func(cmd *cobra.Command, args []string) error {
 		trainingOptOut, _ := cmd.Flags().GetBool("training-opt-out")
+		token, _ := cmd.Flags().GetString("token")
 
 		if nonInteractive {
-			if err := login.NonInteractiveGitHubLogin(cmd.Context(), client, getCluster()); err != nil {
+			if err := login.NonInteractiveLogin(cmd.Context(), client, getCluster(), token); err != nil {
 				return err
 			}
 		} else {

src/pkg/auth/auth.go

@@ -236,3 +236,13 @@ func ExchangeCodeForToken(ctx context.Context, code AuthCodeFlow, tenant types.T
 	}
 	return token.AccessToken, nil
 }
+
+func ExchangeJWTForToken(ctx context.Context, jwt string) (string, error) {
+	term.Debugf("Generating token for jwt %q", jwt)
+
+	token, err := openAuthClient.ExchangeJWT(jwt) // TODO: scopes, TTL
+	if err != nil {
+		return "", err
+	}
+	return token.AccessToken, nil
+}

src/pkg/auth/client.go

@@ -25,6 +25,7 @@ const (
 var (
 	ErrInvalidAccessToken       = errors.New("invalid access token")
 	ErrInvalidAuthorizationCode = errors.New("invalid authorization code")
+	ErrInvalidJWT               = errors.New("invalid JWT")
 	ErrInvalidRefreshToken      = errors.New("invalid refresh token")
 )
 
@@ -124,6 +125,10 @@ type Client interface {
 	 * Exchange the code for access and refresh tokens.
 	 */
 	Exchange(code string, redirectURI string, verifier string) (*ExchangeSuccess, error)
+	/**
+	 * Exchange jwt for access and refresh tokens.
+	 */
+	ExchangeJWT(jwt string) (*ExchangeSuccess, error)
 	/**
 	 * Refreshes the tokens if they have expired. This is used in an SPA app to maintain the
 	 * session, without logging the user out.
@@ -206,6 +211,20 @@ func (c client) callToken(body url.Values) (*Tokens, error) {
 	return &tokens.Tokens, nil
 }
 
+/**
+ * Helper function to exchange tokens with common error handling.
+ */
+func (c client) exchangeForTokens(body url.Values) (*ExchangeSuccess, error) {
+	tokens, err := c.callToken(body)
+	if err != nil {
+		return nil, err
+	}
+
+	return &ExchangeSuccess{
+		Tokens: *tokens,
+	}, nil
+}
+
 /**
  * Exchange the code for access and refresh tokens.
  */
@@ -217,18 +236,40 @@ func (c client) Exchange(code string, redirectURI string, verifier string) (*Exc
 		"grant_type":    {"authorization_code"},
 		"redirect_uri":  {redirectURI},
 	}
-	tokens, err := c.callToken(body)
+
+	result, err := c.exchangeForTokens(body)
 	if err != nil {
 		var oauthError *OAuthError
 		if errors.As(err, &oauthError) {
 			return nil, fmt.Errorf("%w: %w", ErrInvalidAuthorizationCode, err)
 		}
+
 		return nil, fmt.Errorf("token exchange failed: %w", err)
 	}
 
-	return &ExchangeSuccess{
-		Tokens: *tokens,
-	}, nil
+	return result, nil
+}
+
+/**
+ * Exchange the JWT for access and refresh tokens.
+ */
+func (c client) ExchangeJWT(jwt string) (*ExchangeSuccess, error) {
+	body := url.Values{
+		"grant_type": {"urn:ietf:params:oauth:grant-type:jwt-bearer"},
+		"assertion":  {jwt},
+	}
+	result, err := c.exchangeForTokens(body)
+
+	if err != nil {
+		var oauthError *OAuthError
+		if errors.As(err, &oauthError) {
+			return nil, fmt.Errorf("%w: %w", ErrInvalidJWT, err)
+		}
+
+		return nil, fmt.Errorf("token exchange failed: %w", err)
+	}
+
+	return result, nil
 }
 
 /**

src/pkg/auth/client_test.go

@@ -63,6 +63,54 @@ func TestExchange(t *testing.T) {
 	})
 }
 
+func TestExchangeJWT(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch r.URL.Path {
+		case "/token":
+			if r.Method != http.MethodPost {
+				t.Errorf("Expected POST method, got %s", r.Method)
+			}
+			if expected, got := "urn:ietf:params:oauth:grant-type:jwt-bearer", r.PostFormValue("grant_type"); expected != got {
+				t.Errorf("Expected grant_type %s, got: %s", expected, got)
+			}
+
+			jwt := r.PostFormValue("assertion")
+			if jwt == "valid-jwt" {
+				w.Header().Set("Content-Type", "application/json")
+				w.Write([]byte(`{"access_token":"jwt-access-token","refresh_token":"jwt-refresh-token"}`))
+			} else {
+				w.Write([]byte(`{"error":"invalid_request","error_description":"Invalid request"}`))
+			}
+		default:
+			http.Error(w, "Not Found", http.StatusNotFound)
+		}
+	}))
+	t.Cleanup(server.CloseClientConnections)
+
+	client := NewClient("defang-cli", server.URL)
+
+	t.Run("success", func(t *testing.T) {
+		result, err := client.ExchangeJWT("valid-jwt")
+		if err != nil {
+			t.Fatalf("Expected no error, got: %v", err)
+		}
+		if result.AccessToken != "jwt-access-token" {
+			t.Errorf("Expected access token 'jwt-access-token', got: %s", result.AccessToken)
+		}
+		if result.RefreshToken != "jwt-refresh-token" {
+			t.Errorf("Expected refresh token 'jwt-refresh-token', got: %s", result.RefreshToken)
+		}
+	})
+
+	t.Run("invalid jwt", func(t *testing.T) {
+		_, err := client.ExchangeJWT("invalid-jwt")
+		const expected = "invalid JWT: Invalid request"
+		if err.Error() != expected {
+			t.Fatalf("Expected error %q, got: %v", expected, err)
+		}
+	})
+}
+
 func TestAuthorizeExchange(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping browser test in short mode.")

src/pkg/login/login.go

@@ -14,7 +14,6 @@ import (
 	"github.com/DefangLabs/defang/src/pkg/github"
 	"github.com/DefangLabs/defang/src/pkg/term"
 	"github.com/DefangLabs/defang/src/pkg/track"
-	defangv1 "github.com/DefangLabs/defang/src/protos/io/defang/v1"
 	"github.com/bufbuild/connect-go"
 )
 
@@ -94,21 +93,22 @@ func interactiveLogin(ctx context.Context, client client.FabricClient, fabric st
 	return nil
 }
 
-func NonInteractiveGitHubLogin(ctx context.Context, client client.FabricClient, fabric string) error {
-	term.Debug("Non-interactive login using GitHub Actions id-token")
-	idToken, err := github.GetIdToken(ctx)
-	if err != nil {
-		return fmt.Errorf("non-interactive login failed: %w", err)
+func NonInteractiveLogin(ctx context.Context, client client.FabricClient, fabric string, token string) error {
+	if token == "" {
+		term.Debug("Non-interactive login using GitHub Actions id-token")
+		var err error
+		token, err = github.GetIdToken(ctx)
+		if err != nil {
+			return fmt.Errorf("non-interactive login failed: %w", err)
+		}
+		term.Debug("Got GitHub Actions id-token")
 	}
-	term.Debug("Got GitHub Actions id-token")
-	resp, err := client.Token(ctx, &defangv1.TokenRequest{
-		Assertion: idToken,
-		Scope:     []string{"admin", "read", "delete", "tail"},
-	})
+
+	accessToken, err := auth.ExchangeJWTForToken(ctx, token)
 	if err != nil {
-		return err
+		return fmt.Errorf("non-interactive login failed: %w", err)
 	}
-	return cluster.SaveAccessToken(fabric, resp.AccessToken)
+	return cluster.SaveAccessToken(fabric, accessToken)
 }
 
 func InteractiveRequireLoginAndToS(ctx context.Context, fabric client.FabricClient, addr string) error {

src/pkg/login/login_test.go

@@ -108,6 +108,7 @@ func TestNonInteractiveLogin(t *testing.T) {
 	ctx := context.Background()
 	mockClient := &MockForNonInteractiveLogin{}
 	fabric := "test.defang.dev"
+	token := ""
 
 	t.Run("Expect accessToken to be stored when NonInteractiveLogin() succeeds", func(t *testing.T) {
 		requestUrl := os.Getenv("ACTIONS_ID_TOKEN_REQUEST_URL")
@@ -122,7 +123,7 @@ func TestNonInteractiveLogin(t *testing.T) {
 
 		t.Cleanup(func() { client.StateDir = prevStateDir })
 
-		err := NonInteractiveGitHubLogin(ctx, mockClient, fabric)
+		err := NonInteractiveLogin(ctx, mockClient, fabric, token)
 		if err != nil {
 			t.Fatalf("expected no error, got %v", err)
 		}
@@ -139,7 +140,7 @@ func TestNonInteractiveLogin(t *testing.T) {
 
 	t.Run("Expect error when NonInteractiveLogin() fails in the case that GitHub Actions info is not set",
 		func(t *testing.T) {
-			err := NonInteractiveGitHubLogin(ctx, mockClient, fabric)
+			err := NonInteractiveLogin(ctx, mockClient, fabric, token)
 			if err != nil &&
 				err.Error() != "non-interactive login failed: ACTIONS_ID_TOKEN_REQUEST_URL or ACTIONS_ID_TOKEN_REQUEST_TOKEN not set" {
 				t.Fatalf("expected no error, got %v", err)