protected static final String SPNEGO_LOGIN_CONF = "spnego.login.conf";

    /** Configuration key for SPNEGO logger level. */
    protected static final String SPNEGO_LOGGER_LEVEL = "spnego.logger.level";

    /** The underlying SPNEGO authenticator instance. */
    protected org.codelibs.spnego.SpnegoAuthenticator authenticator = null;

    /**
     * Constructs a new SPNEGO authenticator.
     */

        // SPNEGO
        fessConfig.setSystemProperty("spnego.krb5.conf", form.spnegoKrb5Conf);
        fessConfig.setSystemProperty("spnego.login.conf", form.spnegoLoginConf);
        fessConfig.setSystemProperty("spnego.login.client.module", form.spnegoLoginClientModule);
        fessConfig.setSystemProperty("spnego.login.server.module", form.spnegoLoginServerModule);

import org.lastaflute.web.login.credential.LoginCredential;

/**
 * SPNEGO authentication credential implementation.
 *
 * This class represents login credentials obtained through SPNEGO (Security Provider
 * Negotiation Protocol) authentication. It contains the username extracted from the
 * SPNEGO authentication process, typically from a Kerberos ticket.
 */

    /** SPNEGO JAAS login server module name. */
    @Size(max = 1000)
    public String spnegoLoginServerModule;

    /** SPNEGO pre-authentication username. */
    @Size(max = 1000)
    public String spnegoPreauthUsername;

    /** SPNEGO pre-authentication password. */
    @Size(max = 1000)
    public String spnegoPreauthPassword;

    /** Enable or disable SPNEGO basic authentication. */
    @Size(max = 10)

        // SPNEGO logout should return null (relies on Kerberos infrastructure)
        String logoutUrl = authenticator.logout(null);
        assertNull(logoutUrl);
    }

    @Test
    public void test_nullSafeGetResponse() {
        SpnegoAuthenticator authenticator = new SpnegoAuthenticator();

        // SPNEGO typically doesn't provide special response handling

- Web, file system, and data store crawling
- Multi-format document support (Office, PDF, etc.)
- Admin GUI for configuration
- REST API for programmatic access
- SSO integration (OIDC, SAML, SPNEGO, Entra ID)
- i18n support (20+ languages)

## Tech Stack

| Component | Technology |
|-----------|------------|
| Web Framework | LastaFlute (MVC framework) |
| DI Container | Lasta Di |

 *
 * This interface defines the contract for SSO authentication providers that can be
 * integrated with Fess. Implementations handle specific SSO protocols like SAML,
 * OAuth, SPNEGO, or other authentication mechanisms. Each authenticator is responsible
 * for obtaining login credentials, resolving user information, and managing SSO
 * lifecycle operations like logout and metadata exchange.
 */

                                            <la:option value="saml">SAML</la:option>
                                            <la:option value="spnego">SPNEGO</la:option>
                                            <la:option value="entraid">Entra ID</la:option>
                                        </la:select>
                                    </div>

labels.saml_attribute_group_name=Group Attribute Name
labels.saml_attribute_role_name=Role Attribute Name
labels.saml_default_groups=Default Groups
labels.saml_default_roles=Default Roles
labels.general_menu_spnego=SPNEGO
labels.spnego_krb5_conf=Krb5 Config
labels.spnego_login_conf=Login Config
labels.spnego_login_client_module=Login Client Module
labels.spnego_login_server_module=Login Server Module

labels.saml_attribute_group_name=Group Attribute Name
labels.saml_attribute_role_name=Role Attribute Name
labels.saml_default_groups=Default Groups
labels.saml_default_roles=Default Roles
labels.general_menu_spnego=SPNEGO
labels.spnego_krb5_conf=Krb5 Config
labels.spnego_login_conf=Login Config
labels.spnego_login_client_module=Login Client Module
labels.spnego_login_server_module=Login Server Module