feat(cli): Store refresh tokens to extend sessions in otdfctl

otdfctl/cmd/auth/login.go

@@ -39,6 +39,7 @@ func codeLogin(cmd *cobra.Command, args []string) {
 	}); err != nil {
 		c.ExitWithError("failed to set auth credentials", err)
 	}
+
 	c.ExitWithMessage(fmt.Sprintf("Code login complete for profile: [%s]", cp.Name()), cli.ExitCodeSuccess)
 }
 

otdfctl/cmd/common/common.go

@@ -207,8 +207,11 @@ func NewHandler(c *cli.Cli, hooks ...handlers.Hook) handlers.Handler {
 			cli.ExitWithWarning("Profile missing credentials. Please login or add client credentials.")
 		}
 
+		if errors.Is(err, auth.ErrRefreshTokenInvalid) {
+			cli.ExitWithWarning("Your session has expired. Please login again.")
+		}
 		if errors.Is(err, auth.ErrAccessTokenExpired) {
-			cli.ExitWithWarning("Access token expired. Please login or add flag-provided credentials.")
+			cli.ExitWithWarning("Access token expired and could not be refreshed. Please login or add flag-provided credentials.")
 		}
 		if errors.Is(err, auth.ErrAccessTokenNotFound) {
 			cli.ExitWithWarning("No access token found. Please login or add flag-provided credentials.")

otdfctl/pkg/auth/auth.go

@@ -170,8 +170,7 @@ func GetSDKAuthOptionFromProfile(profile *profiles.OtdfctlProfileStore) (sdk.Opt
 	case profiles.AuthTypeClientCredentials:
 		return sdk.WithClientCredentials(c.ClientID, c.ClientSecret, NormalizeScopes(c.Scopes)), nil
 	case profiles.AuthTypeAccessToken:
-		tokenSource := oauth2.StaticTokenSource(buildToken(&c))
-		return sdk.WithOAuthAccessTokenSource(tokenSource), nil
+		return sdk.WithOAuthAccessTokenSource(newProfileTokenSource(profile)), nil
 	default:
 		return nil, ErrInvalidAuthType
 	}
@@ -190,9 +189,18 @@ func ValidateProfileAuthCredentials(ctx context.Context, profile *profiles.Otdfc
 		}
 		return nil
 	case profiles.AuthTypeAccessToken:
-		if !buildToken(&c).Valid() {
+		if buildToken(&c).Valid() {
+			return nil
+		}
+		if !HasRefreshToken(profile) {
 			return ErrAccessTokenExpired
 		}
+		if err := RefreshAccessToken(ctx, profile); err != nil {
+			if errors.Is(err, ErrRefreshTokenInvalid) {
+				return err
+			}
+			return errors.Join(ErrAccessTokenExpired, err)
+		}
 	default:
 		return ErrInvalidAuthType
 	}
@@ -206,6 +214,12 @@ func GetTokenWithProfile(ctx context.Context, profile *profiles.OtdfctlProfileSt
 	case profiles.AuthTypeClientCredentials:
 		return GetTokenWithClientCreds(ctx, profile.GetEndpoint(), c.ClientID, c.ClientSecret, profile.GetTLSNoVerify(), c.Scopes)
 	case profiles.AuthTypeAccessToken:
+		if !buildToken(&c).Valid() && HasRefreshToken(profile) {
+			if err := RefreshAccessToken(ctx, profile); err != nil {
+				return nil, err
+			}
+			c = profile.GetAuthCredentials()
+		}
 		return buildToken(&c), nil
 	default:
 		return nil, ErrInvalidAuthType

otdfctl/pkg/auth/errors.go

@@ -12,4 +12,5 @@ var (
 	ErrProfileCredentialsNotFound = errors.New("profile missing credentials")
 	ErrNoRefreshToken             = errors.New("no refresh token available")
 	ErrRefreshFailed              = errors.New("token refresh failed")
+	ErrRefreshTokenInvalid        = errors.New("refresh token is invalid or expired; please re-login")
 )

otdfctl/pkg/auth/refresh.go

@@ -82,6 +82,12 @@ func refreshAccessToken(ctx context.Context, profile *profiles.OtdfctlProfileSto
 	tokenSource := oauth2Config.TokenSource(ctx, oldToken)
 	newToken, err := tokenSource.Token()
 	if err != nil {
+		if isInvalidGrant(err) {
+			// Refresh token is dead server-side; wipe stored creds so the next
+			// command hits the login prompt cleanly.
+			_ = profile.SetAuthCredentials(profiles.AuthCredentials{})
+			return errors.Join(ErrRefreshTokenInvalid, err)
+		}
 		return fmt.Errorf("%w: %w", ErrRefreshFailed, err)
 	}
 
@@ -143,3 +149,10 @@ func getTokenEndpoint(endpoint string, tlsNoVerify bool) (string, error) {
 	}
 	return pc.tokenEndpoint, nil
 }
+
+// isInvalidGrant reports whether err is an oauth2 token-endpoint error carrying
+// RFC 6749 §5.2 code "invalid_grant" — i.e. the refresh token is expired or revoked.
+func isInvalidGrant(err error) bool {
+	var re *oauth2.RetrieveError
+	return errors.As(err, &re) && re.ErrorCode == "invalid_grant"
+}

otdfctl/pkg/auth/refresh_test.go

@@ -189,9 +189,10 @@ func TestRefreshAccessTokenEndpointError(t *testing.T) {
 	require.ErrorContains(t, err, "failed to get token endpoint")
 }
 
-func TestRefreshAccessTokenRefreshFails(t *testing.T) {
+func TestRefreshAccessTokenInvalidGrant(t *testing.T) {
 	tokenServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusUnauthorized)
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusBadRequest)
 		err := json.NewEncoder(w).Encode(map[string]string{"error": "invalid_grant"})
 		assert.NoError(t, err)
 	}))
@@ -201,10 +202,34 @@ func TestRefreshAccessTokenRefreshFails(t *testing.T) {
 		return tokenServer.URL, nil
 	}
 
+	profile := newTestProfile(t, profiles.AuthTypeAccessToken, "tok", "refresh", time.Now().Add(-time.Hour).Unix())
+	err := refreshAccessToken(t.Context(), profile, resolver)
+	require.Error(t, err)
+	require.ErrorIs(t, err, ErrRefreshTokenInvalid)
+
+	// Creds should be wiped so the next command re-prompts login.
+	creds := profile.GetAuthCredentials()
+	assert.Empty(t, creds.AuthType)
+	assert.Empty(t, creds.AccessToken.RefreshToken)
+}
+
+func TestRefreshAccessTokenGenericFailure(t *testing.T) {
+	tokenServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusInternalServerError)
+	}))
+	defer tokenServer.Close()
+
+	resolver := func(string, bool) (string, error) {
+		return tokenServer.URL, nil
+	}
+
 	profile := newTestProfile(t, profiles.AuthTypeAccessToken, "tok", "refresh", time.Now().Add(-time.Hour).Unix())
 	err := refreshAccessToken(t.Context(), profile, resolver)
 	require.Error(t, err)
 	require.ErrorIs(t, err, ErrRefreshFailed)
+	// Creds should NOT be wiped on transient failures.
+	creds := profile.GetAuthCredentials()
+	assert.Equal(t, "refresh", creds.AccessToken.RefreshToken)
 }
 
 func TestRefreshAccessTokenEmptyClientID(t *testing.T) {

otdfctl/pkg/auth/token_source.go

@@ -0,0 +1,148 @@
+package auth
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+	"sync"
+	"time"
+
+	"github.com/opentdf/platform/otdfctl/pkg/profiles"
+	"github.com/opentdf/platform/otdfctl/pkg/utils"
+	"golang.org/x/oauth2"
+)
+
+// profileTokenSource is an oauth2.TokenSource that transparently refreshes
+// expired access tokens via the stored refresh token and persists the rotated
+// credentials back to the profile. It is safe for concurrent use.
+type profileTokenSource struct {
+	profile *profiles.OtdfctlProfileStore
+	resolve tokenEndpointResolver
+
+	mu           sync.Mutex
+	inner        oauth2.TokenSource
+	cachedAccess string
+}
+
+func newProfileTokenSource(profile *profiles.OtdfctlProfileStore) *profileTokenSource {
+	return &profileTokenSource{
+		profile: profile,
+		resolve: getTokenEndpoint,
+	}
+}
+
+// Token returns a valid access token, refreshing via the stored refresh token
+// when needed and persisting rotated credentials to the profile.
+func (p *profileTokenSource) Token() (*oauth2.Token, error) {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+
+	creds := p.profile.GetAuthCredentials()
+	if creds.AuthType != profiles.AuthTypeAccessToken {
+		return nil, ErrInvalidAuthType
+	}
+
+	if p.inner == nil {
+		if err := p.rebuild(creds); err != nil {
+			return nil, err
+		}
+	}
+
+	tok, err := p.inner.Token()
+	if err != nil {
+		if isInvalidGrant(err) {
+			_ = p.profile.SetAuthCredentials(profiles.AuthCredentials{})
+			p.inner = nil
+			return nil, errors.Join(ErrRefreshTokenInvalid, err)
+		}
+		slog.Warn("token source refresh failed", slog.Any("error", err))
+		return nil, err
+	}
+
+	if tok.AccessToken != p.cachedAccess {
+		p.persist(creds, tok)
+		p.cachedAccess = tok.AccessToken
+	}
+	return tok, nil
+}
+
+// Invalidate drops the cached inner source so the next Token() call rebuilds
+// from the current profile creds and forces a refresh. Used by callers that
+// know the server has rejected the current access token (e.g. a 401 retry).
+func (p *profileTokenSource) Invalidate() {
+	p.mu.Lock()
+	defer p.mu.Unlock()
+	p.inner = nil
+}
+
+// rebuild constructs the inner oauth2.TokenSource from the profile's creds.
+// Caller must hold p.mu.
+func (p *profileTokenSource) rebuild(creds profiles.AuthCredentials) error {
+	endpoint := p.profile.GetEndpoint()
+	tlsNoVerify := p.profile.GetTLSNoVerify()
+
+	normalized, err := utils.NormalizeEndpoint(endpoint)
+	if err != nil {
+		return err
+	}
+	tokenEndpoint, err := p.resolve(normalized.String(), tlsNoVerify)
+	if err != nil {
+		return err
+	}
+
+	clientID := creds.AccessToken.ClientID
+	if clientID == "" {
+		clientID = DefaultPublicClientID
+	}
+
+	cfg := &oauth2.Config{
+		ClientID: clientID,
+		Endpoint: oauth2.Endpoint{TokenURL: tokenEndpoint},
+	}
+
+	ctx := context.Background()
+	if tlsNoVerify {
+		ctx = context.WithValue(ctx, oauth2.HTTPClient, utils.NewHTTPClient(tlsNoVerify))
+	}
+
+	oldToken := buildToken(&creds)
+	p.inner = cfg.TokenSource(ctx, oldToken)
+	p.cachedAccess = oldToken.AccessToken
+	return nil
+}
+
+// persist writes the rotated token back to the profile. Some IdPs omit
+// refresh_token on refresh (RFC-compliant no-rotation); keep the old one in
+// that case. A write-back failure is logged but not returned — the fresh
+// token is still valid for the in-flight call.
+func (p *profileTokenSource) persist(oldCreds profiles.AuthCredentials, tok *oauth2.Token) {
+	refresh := tok.RefreshToken
+	if refresh == "" {
+		refresh = oldCreds.AccessToken.RefreshToken
+	}
+	expiry := tok.Expiry.Unix()
+	if tok.Expiry.IsZero() {
+		expiry = time.Now().Add(time.Hour).Unix()
+		slog.Warn("token response missing expires_in, assuming 1 hour")
+	}
+
+	clientID := oldCreds.AccessToken.ClientID
+	if clientID == "" {
+		clientID = DefaultPublicClientID
+	}
+
+	newCreds := profiles.AuthCredentials{
+		AuthType: profiles.AuthTypeAccessToken,
+		AccessToken: profiles.AuthCredentialsAccessToken{
+			ClientID:     clientID,
+			AccessToken:  tok.AccessToken,
+			RefreshToken: refresh,
+			Expiration:   expiry,
+		},
+	}
+	if err := p.profile.SetAuthCredentials(newCreds); err != nil {
+		slog.Warn("failed to persist refreshed credentials", slog.Any("error", err))
+		return
+	}
+	slog.Info("access token refreshed", slog.String("profile", p.profile.Name()))
+}