Many Active Directory and other LDAP services are setup with [DNS SRV Records](https://ldap.com/dns-srv-records-for-ldap/) for high-availability of the directory service. To use this to find LDAP servers to connect to, an LDAP client makes a DNS SRV record request to the DNS service on a domain that looks like `_service._proto.example.com`. For LDAP the `proto` value is always `tcp`, and `service` is usually `ldap` or `ldaps`.

        Exception innerCause = new IllegalArgumentException("Invalid LDAP parameter");
        RuntimeException middleCause = new RuntimeException("LDAP configuration error", innerCause);
        LdapOperationException exception = new LdapOperationException("LDAP operation failed", middleCause);

        assertEquals("LDAP operation failed", exception.getMessage());
        assertEquals(middleCause, exception.getCause());

        String message = "LDAP error: \"Invalid <config>\" & 'bad chars' @ #$%^&*()";
        LdapConfigurationException exception = new LdapConfigurationException(message);

        assertEquals(message, exception.getMessage());
    }

    public void test_unicodeCharactersInMessage() {
        // Test with Unicode characters in message
        String message = "LDAP設定エラー: 接続失敗 🚫 ñ é ü ß";

	// 1. Collect all LDAP users with active creds.
	allCreds := sys.store.GetSTSAndServiceAccounts()
	// List of unique LDAP (parent) user DNs that have active creds
	var parentUserActualDNList []string
	// Map of LDAP user (internal representation) to list of active credential objects
	parentUserToCredsMap := make(map[string][]auth.Credentials)
	// DN to ldap username mapping for each LDAP user

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.auth.chain;

import org.codelibs.fess.ldap.LdapManager;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.opensearch.user.exentity.User;
import org.codelibs.fess.unit.UnitFessTestCase;
import org.codelibs.fess.util.ComponentUtil;

| [**AD/LDAP**](https://github.com/minio/minio/blob/master/docs/sts/ldap.md)             | Let AD/LDAP users request temporary credentials using AD/LDAP username and password.                                                          |

	}
  ]
}
```

If the user is authenticating using an STS credential which was authorized from AD/LDAP we allow `ldap:*` variables.

Currently supports

- `ldap:username`
- `ldap:user`
- `ldap:groups`

Following example shows LDAP users full programmatic access to a LDAP user-specific directory (their own "home directory") in MinIO.

```
{
  "Version": "2012-10-17",
  "Statement": [

        DynamicProperties systemProps = new DynamicProperties(file);

        // Get existing component and update it instead of registering new one
        DynamicProperties existingProps = SingletonLaContainerFactory.getContainer().getComponent("systemProperties");
        existingProps.setProperty("ldap.security.principal", "******@****.***");

	if err != nil {
		c.Fatalf("unable to setup LDAP for tests: %v", err)
	}

	s.RestartIAMSuite(c)
}

// SetUpLDAPWithNonNormalizedBaseDN - expects to setup an LDAP test server using
// the test LDAP container and canned data from
// https://github.com/minio/minio-ldap-testing
//
// Sets up non-normalized base DN configuration for testing.

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.ldap;

import java.util.Hashtable;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import java.util.function.Consumer;

import org.codelibs.core.lang.StringUtil;