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gjohnson
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For 3rd PR (POM fixed) - [BAEL-4451] LDAP Authentication using Pure Java
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‎core-java-modules/core-java-jndi/pom.xml‎

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<artifactId>h2</artifactId>
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<version>${h2.version}</version>
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</dependency>
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<dependency>
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<groupId>org.apache.directory.server</groupId>
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<artifactId>apacheds-test-framework</artifactId>
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<version>${apacheds.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.assertj</groupId>
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<artifactId>assertj-core</artifactId>
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<version>3.21.0</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<properties>
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<spring.version>5.0.9.RELEASE</spring.version>
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<h2.version>1.4.199</h2.version>
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<apacheds.version>2.0.0.AM26</apacheds.version>
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<source.version>1.8</source.version>
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<target.version>1.8</target.version>
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</properties>

‎core-java-modules/core-java-jndi/src/test/java/com/baeldung/jndi/ldap/auth/JndiLdapAuthManualTest.java‎

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package com.baeldung.jndi.ldap.auth;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.assertj.core.api.Assertions.assertThatCode;
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import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
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import java.util.Hashtable;
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import javax.naming.AuthenticationException;
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import javax.naming.Context;
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import javax.naming.NamingEnumeration;
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import javax.naming.directory.Attributes;
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import javax.naming.directory.DirContext;
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import javax.naming.directory.InitialDirContext;
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import javax.naming.directory.SearchControls;
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import javax.naming.directory.SearchResult;
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import org.apache.directory.server.annotations.CreateLdapServer;
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import org.apache.directory.server.annotations.CreateTransport;
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import org.apache.directory.server.core.annotations.ApplyLdifFiles;
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import org.apache.directory.server.core.annotations.CreateDS;
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import org.apache.directory.server.core.annotations.CreatePartition;
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import org.apache.directory.server.core.integ.AbstractLdapTestUnit;
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import org.apache.directory.server.core.integ.FrameworkRunner;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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@RunWith(FrameworkRunner.class)
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@CreateLdapServer(transports = { @CreateTransport(protocol = "LDAP", address = "localhost", port = 10390)})
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@CreateDS(
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allowAnonAccess = false, partitions = {@CreatePartition(name = "TestPartition", suffix = "dc=baeldung,dc=com")})
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@ApplyLdifFiles({"users.ldif"})
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// class marked as manual test, as it has to run independently from the other unit tests in the module
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public class JndiLdapAuthManualTest extends AbstractLdapTestUnit {
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private static void authenticateUser(Hashtable<String, String> environment) throws Exception {
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DirContext context = new InitialDirContext(environment);
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context.close();
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}
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@Test
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public void givenPreloadedLDAPUserJoe_whenAuthUserWithCorrectPW_thenAuthSucceeds() throws Exception {
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Hashtable<String, String> environment = new Hashtable<String, String>();
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environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
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environment.put(Context.PROVIDER_URL, "ldap://localhost:10390");
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environment.put(Context.SECURITY_AUTHENTICATION, "simple");
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environment.put(Context.SECURITY_PRINCIPAL, "cn=Joe Simms,ou=Users,dc=baeldung,dc=com");
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environment.put(Context.SECURITY_CREDENTIALS, "12345");
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assertThatCode(() -> authenticateUser(environment)).doesNotThrowAnyException();
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}
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@Test
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public void givenPreloadedLDAPUserJoe_whenAuthUserWithWrongPW_thenAuthFails() throws Exception {
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Hashtable<String, String> environment = new Hashtable<String, String>();
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environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
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environment.put(Context.PROVIDER_URL, "ldap://localhost:10390");
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environment.put(Context.SECURITY_AUTHENTICATION, "simple");
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environment.put(Context.SECURITY_PRINCIPAL, "cn=Joe Simms,ou=Users,dc=baeldung,dc=com");
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environment.put(Context.SECURITY_CREDENTIALS, "wronguserpw");
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assertThatExceptionOfType(AuthenticationException.class).isThrownBy(() -> authenticateUser(environment));
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}
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@Test
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public void givenPreloadedLDAPUserJoe_whenSearchAndAuthUserWithCorrectPW_thenAuthSucceeds() throws Exception {
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// first authenticate against LDAP as admin to search up DN of user : Joe Simms
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Hashtable<String, String> environment = new Hashtable<String, String>();
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environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
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environment.put(Context.PROVIDER_URL, "ldap://localhost:10390");
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environment.put(Context.SECURITY_AUTHENTICATION, "simple");
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environment.put(Context.SECURITY_PRINCIPAL, "uid=admin,ou=system");
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environment.put(Context.SECURITY_CREDENTIALS, "secret");
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DirContext adminContext = new InitialDirContext(environment);
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// define the search filter to find the person with CN : Joe Simms
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String filter = "(&(objectClass=person)(cn=Joe Simms))";
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// declare the attributes we want returned for the object being searched
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String[] attrIDs = { "cn" };
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// define the search controls
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SearchControls searchControls = new SearchControls();
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searchControls.setReturningAttributes(attrIDs);
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searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
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// search for User with filter cn=Joe Simms
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NamingEnumeration<SearchResult> searchResults = adminContext.search("dc=baeldung,dc=com", filter, searchControls);
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if (searchResults.hasMore()) {
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SearchResult result = (SearchResult) searchResults.next();
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Attributes attrs = result.getAttributes();
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String distinguishedName = result.getNameInNamespace();
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assertThat(distinguishedName).isEqualTo("cn=Joe Simms,ou=Users,dc=baeldung,dc=com");
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String commonName = attrs.get("cn").toString();
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assertThat(commonName).isEqualTo("cn: Joe Simms");
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// authenticate new context with DN for user Joe Simms, using correct password
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environment.put(Context.SECURITY_PRINCIPAL, distinguishedName);
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environment.put(Context.SECURITY_CREDENTIALS, "12345");
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assertThatCode(() -> authenticateUser(environment)).doesNotThrowAnyException();
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}
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adminContext.close();
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}
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@Test
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public void givenPreloadedLDAPUserJoe_whenSearchAndAuthUserWithWrongPW_thenAuthFails() throws Exception {
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// first authenticate against LDAP as admin to search up DN of user : Joe Simms
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Hashtable<String, String> environment = new Hashtable<String, String>();
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environment.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
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environment.put(Context.PROVIDER_URL, "ldap://localhost:10390");
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environment.put(Context.SECURITY_AUTHENTICATION, "simple");
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environment.put(Context.SECURITY_PRINCIPAL, "uid=admin,ou=system");
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environment.put(Context.SECURITY_CREDENTIALS, "secret");
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DirContext adminContext = new InitialDirContext(environment);
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// define the search filter to find the person with CN : Joe Simms
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String filter = "(&(objectClass=person)(cn=Joe Simms))";
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// declare the attributes we want returned for the object being searched
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String[] attrIDs = { "cn" };
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// define the search controls
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SearchControls searchControls = new SearchControls();
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searchControls.setReturningAttributes(attrIDs);
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searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
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// search for User with filter cn=Joe Simms
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NamingEnumeration<SearchResult> searchResults = adminContext.search("dc=baeldung,dc=com", filter, searchControls);
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if (searchResults.hasMore()) {
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SearchResult result = (SearchResult) searchResults.next();
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Attributes attrs = result.getAttributes();
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String distinguishedName = result.getNameInNamespace();
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assertThat(distinguishedName).isEqualTo("cn=Joe Simms,ou=Users,dc=baeldung,dc=com");
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String commonName = attrs.get("cn").toString();
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assertThat(commonName).isEqualTo("cn: Joe Simms");
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// authenticate new context with DN for user Joe Simms, using wrong password
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environment.put(Context.SECURITY_PRINCIPAL, distinguishedName);
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environment.put(Context.SECURITY_CREDENTIALS, "wronguserpassword");
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assertThatExceptionOfType(AuthenticationException.class).isThrownBy(() -> authenticateUser(environment));
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}
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adminContext.close();
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}
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}

‎core-java-modules/core-java-jndi/src/test/resources/logback.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
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</pattern>
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</encoder>
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</appender>
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<root level="WARN">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>

‎core-java-modules/core-java-jndi/src/test/resources/users.ldif‎

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version: 1
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dn: dc=baeldung,dc=com
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objectClass: domain
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objectClass: top
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dc: baeldung
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dn: ou=Users,dc=baeldung,dc=com
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objectClass: organizationalUnit
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objectClass: top
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ou: Users
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dn: cn=Joe Simms,ou=Users,dc=baeldung,dc=com
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objectClass: inetOrgPerson
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objectClass: organizationalPerson
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objectClass: person
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objectClass: top
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cn: Joe Simms
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sn: Simms
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uid: user1
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userPassword: 12345

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