Add LDAP AuthenticationManager factory

config/spring-security-config.gradle

@@ -74,6 +74,7 @@ dependencies {
 	testImplementation "org.apache.directory.server:apacheds-protocol-ldap"
 	testImplementation "org.apache.directory.server:apacheds-server-jndi"
 	testImplementation 'org.apache.directory.shared:shared-ldap'
+	testImplementation "com.unboundid:unboundid-ldapsdk"
 	testImplementation 'org.eclipse.persistence:javax.persistence'
 	testImplementation 'org.hibernate:hibernate-entitymanager'
 	testImplementation 'org.hsqldb:hsqldb'

config/src/integration-test/java/org/springframework/security/config/ldap/EmbeddedLdapServerContextSourceFactoryBeanITests.java

@@ -0,0 +1,185 @@
+/*
+ * Copyright 2002-2022 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * 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.springframework.security.config.ldap;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import org.springframework.beans.factory.UnsatisfiedDependencyException;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.ldap.core.support.LdapContextSource;
+import org.springframework.security.authentication.AuthenticationManager;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.test.SpringTestContext;
+import org.springframework.security.config.test.SpringTestContextExtension;
+import org.springframework.security.crypto.password.NoOpPasswordEncoder;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestBuilders.formLogin;
+import static org.springframework.security.test.web.servlet.response.SecurityMockMvcResultMatchers.authenticated;
+
+@ExtendWith(SpringTestContextExtension.class)
+public class EmbeddedLdapServerContextSourceFactoryBeanITests {
+
+	public final SpringTestContext spring = new SpringTestContext(this);
+
+	@Autowired
+	private MockMvc mockMvc;
+
+	@Test
+	public void contextSourceFactoryBeanWhenEmbeddedServerThenAuthenticates() throws Exception {
+		this.spring.register(FromEmbeddedLdapServerConfig.class).autowire();
+
+		this.mockMvc.perform(formLogin().user("bob").password("bobspassword"))
+				.andExpect(authenticated().withUsername("bob"));
+	}
+
+	@Test
+	public void contextSourceFactoryBeanWhenPortZeroThenAuthenticates() throws Exception {
+		this.spring.register(PortZeroConfig.class).autowire();
+
+		this.mockMvc.perform(formLogin().user("bob").password("bobspassword"))
+				.andExpect(authenticated().withUsername("bob"));
+	}
+
+	@Test
+	public void contextSourceFactoryBeanWhenCustomLdifAndRootThenAuthenticates() throws Exception {
+		this.spring.register(CustomLdifAndRootConfig.class).autowire();
+
+		this.mockMvc.perform(formLogin().user("pg").password("password")).andExpect(authenticated().withUsername("pg"));
+	}
+
+	@Test
+	public void contextSourceFactoryBeanWhenCustomManagerDnThenAuthenticates() throws Exception {
+		this.spring.register(CustomManagerDnConfig.class).autowire();
+
+		this.mockMvc.perform(formLogin().user("bob").password("bobspassword"))
+				.andExpect(authenticated().withUsername("bob"));
+	}
+
+	@Test
+	public void contextSourceFactoryBeanWhenManagerDnAndNoPasswordThenException() {
+		assertThatExceptionOfType(UnsatisfiedDependencyException.class)
+				.isThrownBy(() -> this.spring.register(CustomManagerDnNoPasswordConfig.class).autowire())
+				.withRootCauseInstanceOf(IllegalStateException.class)
+				.withMessageContaining("managerPassword is required if managerDn is supplied");
+	}
+
+	@EnableWebSecurity
+	static class FromEmbeddedLdapServerConfig {
+
+		@Bean
+		EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
+			return EmbeddedLdapServerContextSourceFactoryBean.fromEmbeddedLdapServer();
+		}
+
+		@Bean
+		AuthenticationManager authenticationManager(LdapContextSource contextSource) {
+			LdapBindAuthenticationManagerFactory factory = new LdapBindAuthenticationManagerFactory(contextSource);
+			factory.setUserDnPatterns("uid={0},ou=people");
+			return factory.createAuthenticationManager();
+		}
+
+	}
+
+	@EnableWebSecurity
+	static class PortZeroConfig {
+
+		@Bean
+		EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
+			EmbeddedLdapServerContextSourceFactoryBean factoryBean = EmbeddedLdapServerContextSourceFactoryBean
+					.fromEmbeddedLdapServer();
+			factoryBean.setPort(0);
+			return factoryBean;
+		}
+
+		@Bean
+		AuthenticationManager authenticationManager(LdapContextSource contextSource) {
+			LdapBindAuthenticationManagerFactory factory = new LdapBindAuthenticationManagerFactory(contextSource);
+			factory.setUserDnPatterns("uid={0},ou=people");
+			return factory.createAuthenticationManager();
+		}
+
+	}
+
+	@EnableWebSecurity
+	static class CustomLdifAndRootConfig {
+
+		@Bean
+		EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
+			EmbeddedLdapServerContextSourceFactoryBean factoryBean = EmbeddedLdapServerContextSourceFactoryBean
+					.fromEmbeddedLdapServer();
+			factoryBean.setLdif("classpath*:test-server2.xldif");
+			factoryBean.setRoot("dc=monkeymachine,dc=co,dc=uk");
+			return factoryBean;
+		}
+
+		@Bean
+		AuthenticationManager authenticationManager(LdapContextSource contextSource) {
+			LdapBindAuthenticationManagerFactory factory = new LdapBindAuthenticationManagerFactory(contextSource);
+			factory.setUserDnPatterns("uid={0},ou=gorillas");
+			return factory.createAuthenticationManager();
+		}
+
+	}
+
+	@EnableWebSecurity
+	static class CustomManagerDnConfig {
+
+		@Bean
+		EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
+			EmbeddedLdapServerContextSourceFactoryBean factoryBean = EmbeddedLdapServerContextSourceFactoryBean
+					.fromEmbeddedLdapServer();
+			factoryBean.setManagerDn("uid=admin,ou=system");
+			factoryBean.setManagerPassword("secret");
+			return factoryBean;
+		}
+
+		@Bean
+		AuthenticationManager authenticationManager(LdapContextSource contextSource) {
+			LdapPasswordComparisonAuthenticationManagerFactory factory = new LdapPasswordComparisonAuthenticationManagerFactory(
+					contextSource, NoOpPasswordEncoder.getInstance());
+			factory.setUserDnPatterns("uid={0},ou=people");
+			return factory.createAuthenticationManager();
+		}
+
+	}
+
+	@EnableWebSecurity
+	static class CustomManagerDnNoPasswordConfig {
+
+		@Bean
+		EmbeddedLdapServerContextSourceFactoryBean contextSourceFactoryBean() {
+			EmbeddedLdapServerContextSourceFactoryBean factoryBean = EmbeddedLdapServerContextSourceFactoryBean
+					.fromEmbeddedLdapServer();
+			factoryBean.setManagerDn("uid=admin,ou=system");
+			return factoryBean;
+		}
+
+		@Bean
+		AuthenticationManager authenticationManager(LdapContextSource contextSource) {
+			LdapPasswordComparisonAuthenticationManagerFactory factory = new LdapPasswordComparisonAuthenticationManagerFactory(
+					contextSource, NoOpPasswordEncoder.getInstance());
+			factory.setUserDnPatterns("uid={0},ou=people");
+			return factory.createAuthenticationManager();
+		}
+
+	}
+
+}