* @param tc the CIFS context to use
     *
     * @param req
     *            The request being serviced.
     * @param resp
     *            The response.
     * @param challenge
     *            The domain controller challenge.
     * @return credentials passed in the servlet request
     * @throws IOException
     *             If an IO error occurs.
     */

        // Test with username containing special characters
        String username = "user@domain.com";
        FessUserNotFoundException exception = new FessUserNotFoundException(username);

        assertNotNull(exception);
        assertEquals("User is not found: user@domain.com", exception.getMessage());
        assertNull(exception.getCause());
    }

# Security - First Steps { #security-first-steps }

Let's imagine that you have your **backend** API in some domain.

And you have a **frontend** in another domain or in a different path of the same domain (or in a mobile application).

And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.

import org.apache.http.conn.DnsResolver;

/**
 * The {@code IdnDnsResolver} class implements the {@code DnsResolver} interface
 * to provide DNS resolution with support for Internationalized Domain Names (IDN).
 * It converts Unicode domain names to ASCII Compatible Encoding (ACE) using the
 * {@link java.net.IDN} class.
 *
 * <p>This class allows setting a custom flag for the IDN conversion and a custom
 * encoding for URL decoding.</p>

     * Verifies that the method returns the correct OEM domain name.
     * @throws CIFSException
     */
    @Test
    void testGetOEMDomainName() throws CIFSException {
        when(smbTreeHandle.getOEMDomainName()).thenReturn("TEST_DOMAIN");
        assertEquals("TEST_DOMAIN", smbTreeHandle.getOEMDomainName(), "OEM domain name should be TEST_DOMAIN");
    }

    /**

        // Set server timezone (in minutes) and domain
        nego.getServerData().serverTimeZone = 60; // 60 minutes
        nego.getServerData().oemDomainName = "DOMAIN";

        when(transport.getNegotiateResponse()).thenReturn(nego);

        assertEquals(60L * 1000L * 60L, handle.getServerTimeZoneOffset());
        assertEquals("DOMAIN", handle.getOEMDomainName());
        verify(session, times(2)).close();

- cloud.google.com/go/deploy: v1.8.0
- cloud.google.com/go/dialogflow: v1.32.0
- cloud.google.com/go/dlp: v1.9.0
- cloud.google.com/go/documentai: v1.18.0
- cloud.google.com/go/domains: v0.8.0
- cloud.google.com/go/edgecontainer: v1.0.0
- cloud.google.com/go/errorreporting: v0.3.0
- cloud.google.com/go/essentialcontacts: v1.5.0
- cloud.google.com/go/eventarc: v1.11.0

        mockName = new Name(mockConfig, "DOMAIN", 0x1B, null); // Domain Master Browser
        NbtAddress nbtAddress = new NbtAddress(mockName, testAddressInt, false, NbtAddress.H_NODE);
        assertEquals(NbtAddress.SMBSERVER_NAME, nbtAddress.firstCalledName());

        mockName = new Name(mockConfig, "DOMAIN", 0x1C, null); // Domain Controller

        // Mock ServletConfig to provide initialization parameters
        Map<String, String> initParams = new HashMap<>();
        initParams.put("jcifs.smb.client.domain", "TEST_DOMAIN");
        initParams.put("jcifs.http.domainController", "dc.test.domain");
        initParams.put("jcifs.http.enableBasic", "true");
        initParams.put("jcifs.http.insecureBasic", "true");
        initParams.put("jcifs.http.basicRealm", "TestRealm");

                if (index == -1) {
                    index = user.indexOf('/');
                }
                final String domain = index != -1 ? user.substring(0, index) : defaultDomain;
                user = index != -1 ? user.substring(index + 1) : user;
                ntlm = new NtlmPasswordAuthentication(domain, user, password);
                dc = UniAddress.getByName(domainController, true);
            }
            try {