ldap connector implemented

model/src/main/java/lcsb/mapviewer/model/user/ConfigurationElementTypeGroup.java

@@ -7,6 +7,7 @@ public enum ConfigurationElementTypeGroup {
   OVERLAYS("Overlays"), //
   POINT_AND_CLICK("Point and click"), //
   SERVER_CONFIGURATION("Server configuration"),//
+  LDAP_CONFIGURATION("LDAP configuration"),//
 
   ;
   private String commonName;

pom.xml

@@ -82,6 +82,8 @@
 		
 		<cglib.version>2.2.2</cglib.version>
 		
+
+    <unboundid-ldapsdk.version>4.0.6</unboundid-ldapsdk.version>
 		<mockito.version>1.10.19</mockito.version>
 	</properties>
 

service/pom.xml

@@ -118,6 +118,13 @@
 			<version>3.12</version>
 		</dependency>
 
+		<!-- https://mvnrepository.com/artifact/com.unboundid/unboundid-ldapsdk -->
+		<dependency>
+		    <groupId>com.unboundid</groupId>
+		    <artifactId>unboundid-ldapsdk</artifactId>
+		    <version>${unboundid-ldapsdk.version}</version>
+		</dependency>
+
 <!-- mockito used for testing -->
 		<dependency>
 			<groupId>org.mockito</groupId>

service/src/main/java/lcsb/mapviewer/services/UserDTO.java

+package lcsb.mapviewer.services;
+
+public class UserDTO {
+  private String login;
+  private String firstName;
+  private String lastName;
+  private String email;
+  private String bindDn;
+
+  public String getLogin() {
+    return login;
+  }
+
+  public void setLogin(String login) {
+    this.login = login;
+  }
+
+  public String getFirstName() {
+    return firstName;
+  }
+
+  public void setFirstName(String firstName) {
+    this.firstName = firstName;
+  }
+
+  public String getLastName() {
+    return lastName;
+  }
+
+  public void setLastName(String lastName) {
+    this.lastName = lastName;
+  }
+
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+
+  public String getBindDn() {
+    return bindDn;
+  }
+
+  public void setBindDn(String bindDn) {
+    this.bindDn = bindDn;
+  }
+}

service/src/main/java/lcsb/mapviewer/services/impl/LdapService.java

+package lcsb.mapviewer.services.impl;
+
+import java.security.GeneralSecurityException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.transaction.annotation.Transactional;
+
+import com.unboundid.ldap.sdk.Attribute;
+import com.unboundid.ldap.sdk.BindResult;
+import com.unboundid.ldap.sdk.Filter;
+import com.unboundid.ldap.sdk.LDAPConnection;
+import com.unboundid.ldap.sdk.LDAPException;
+import com.unboundid.ldap.sdk.ResultCode;
+import com.unboundid.ldap.sdk.SearchResult;
+import com.unboundid.ldap.sdk.SearchResultEntry;
+import com.unboundid.ldap.sdk.SearchScope;
+import com.unboundid.ldap.sdk.SimpleBindRequest;
+import com.unboundid.util.ssl.SSLUtil;
+import com.unboundid.util.ssl.TrustAllTrustManager;
+
+import lcsb.mapviewer.common.exception.InvalidStateException;
+import lcsb.mapviewer.model.user.ConfigurationElementType;
+import lcsb.mapviewer.services.UserDTO;
+import lcsb.mapviewer.services.interfaces.IConfigurationService;
+import lcsb.mapviewer.services.interfaces.ILdapService;
+
+@Transactional(value = "txManager")
+public class LdapService implements ILdapService {
+  Logger logger = Logger.getLogger(LdapService.class);
+
+  @Autowired
+  private IConfigurationService configurationService;
+
+  protected LDAPConnection getConnection() throws LDAPException {
+    String address = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_ADDRESS);
+    if (address == null || address.trim().isEmpty()) {
+      return null;
+    }
+    boolean ssl = "true"
+        .equalsIgnoreCase(configurationService.getConfigurationValue(ConfigurationElementType.LDAP_SSL));
+
+    String portString = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_PORT);
+    if (portString == null || address.trim().isEmpty()) {
+      if (ssl) {
+        portString = "636";
+      } else {
+        portString = "389";
+      }
+    }
+    int port = Integer.parseInt(portString);
+    LDAPConnection connection;
+    if (ssl) {
+      SSLUtil sslUtil = new SSLUtil(new TrustAllTrustManager());
+      try {
+        connection = new LDAPConnection(sslUtil.createSSLSocketFactory());
+      } catch (GeneralSecurityException e) {
+        throw new InvalidStateException(e);
+      }
+    } else {
+      connection = new LDAPConnection();
+    }
+    connection.connect(address, port);
+
+    String bindDn = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_BIND_DN);
+    String password = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_PASSWORD);
+
+    if (bindDn == null || bindDn.trim().isEmpty()) {
+      connection.bind(new SimpleBindRequest());
+    } else {
+      connection.bind(bindDn, password);
+    }
+
+    return connection;
+  }
+
+  @Override
+  public boolean login(String login, String password) throws LDAPException {
+    if (!isValidConfiguratio()) {
+      logger.warn("Invalid LDAP configuration");
+      return false;
+    }
+    LDAPConnection connection = getConnection();
+    UserDTO user = getUserByLogin(login);
+    if (user != null) {
+      try {
+        BindResult result = connection.bind(user.getBindDn(), password);
+        return result.getResultCode().equals(ResultCode.SUCCESS);
+      } catch (Exception e) {
+        return false;
+      }
+    }
+
+    return false;
+  }
+
+  @Override
+  public List<String> getUsernames() throws LDAPException {
+    if (!isValidConfiguratio()) {
+      logger.warn("Invalid LDAP configuration");
+      return new ArrayList<>();
+    }
+    List<String> result = new ArrayList<>();
+    LDAPConnection connection = getConnection();
+
+    Filter f2 = createObjectClassFilter();
+    Filter f3 = createAttributeFilter();
+
+    Filter filter = Filter.createANDFilter(f2, f3);
+
+    String baseDn = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_BASE_DN);
+    SearchResult searchResult = connection.search(baseDn, SearchScope.SUB, filter);
+
+    for (SearchResultEntry entry : searchResult.getSearchEntries()) {
+      Attribute uid = entry.getAttribute("uid");
+      if (uid != null) {
+        result.add(uid.getValue());
+      } else {
+        logger.warn("Invalid ldap entry: " + entry);
+      }
+    }
+    connection.close();
+
+    return result;
+  }
+
+  @Override
+  public UserDTO getUserByLogin(String login) throws LDAPException {
+    if (!isValidConfiguratio()) {
+      logger.warn("Invalid LDAP configuration");
+      return null;
+    }
+    LDAPConnection connection = getConnection();
+    try {
+      String baseDn = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_BASE_DN);
+      String firstNameAttribute = configurationService
+          .getConfigurationValue(ConfigurationElementType.LDAP_FIRST_NAME_ATTRIBUTE);
+      String lastNameAttribute = configurationService
+          .getConfigurationValue(ConfigurationElementType.LDAP_LAST_NAME_ATTRIBUTE);
+      String emailAttribute = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_EMAIL_ATTRIBUTE);
+
+      Filter f1 = createLoginFilter(login);
+      Filter f2 = createObjectClassFilter();
+      Filter f3 = createAttributeFilter();
+
+      Filter filter = Filter.createANDFilter(f1, f2, f3);
+      SearchResult searchResult = connection.search(baseDn, SearchScope.SUB, filter);
+
+      for (SearchResultEntry entry : searchResult.getSearchEntries()) {
+        UserDTO result = new UserDTO();
+        result.setBindDn(entry.getDN());
+
+        Attribute uidAttribute = entry.getAttribute("uid");
+        if (uidAttribute != null) {
+          result.setLogin(uidAttribute.getValue());
+        } else {
+          logger.warn("Invalid ldap entry: " + entry);
+        }
+        if (!firstNameAttribute.trim().isEmpty()) {
+          Attribute firstName = entry.getAttribute(firstNameAttribute);
+          if (firstName != null) {
+            result.setFirstName(firstName.getValue());
+          }
+        }
+
+        if (!lastNameAttribute.trim().isEmpty()) {
+          Attribute lastName = entry.getAttribute(lastNameAttribute);
+          if (lastName != null) {
+            result.setLastName(lastName.getValue());
+          }
+        }
+
+        if (!emailAttribute.trim().isEmpty()) {
+          Attribute emailName = entry.getAttribute(emailAttribute);
+          if (emailName != null) {
+            result.setEmail(emailName.getValue());
+          }
+        }
+
+        return result;
+      }
+      return null;
+    } finally {
+      connection.close();
+    }
+  }
+
+  private Filter createObjectClassFilter() {
+    String objectClass = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_OBJECT_CLASS);
+
+    if (objectClass == null || objectClass.trim().isEmpty()) {
+      objectClass = "*";
+    }
+
+    return  Filter.createEqualityFilter("objectClass", objectClass);
+  }
+
+  private Filter createAttributeFilter() throws LDAPException {
+    String ldapStringFilter = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_FILTER);
+
+    if (ldapStringFilter == null || ldapStringFilter.trim().isEmpty()) {
+      return Filter.create("");
+    }
+
+    return Filter.create(ldapStringFilter);
+  }
+
+  private Filter createLoginFilter(String login) {
+    return  Filter.createEqualityFilter("uid", login);
+  }
+
+  public IConfigurationService getConfigurationService() {
+    return configurationService;
+  }
+
+  public void setConfigurationService(IConfigurationService configurationService) {
+    this.configurationService = configurationService;
+  }
+
+  @Override
+  public boolean isValidConfiguratio() {
+    try {
+      String baseDn = configurationService.getConfigurationValue(ConfigurationElementType.LDAP_BASE_DN);
+      if (baseDn == null || baseDn.trim().isEmpty()) {
+        return false;
+      }
+      LDAPConnection connection = getConnection();
+      if (connection != null) {
+        connection.close();
+        return true;
+      }
+      return false;
+    } catch (Exception e) {
+      logger.error(e, e);
+      return false;
+    }
+  }
+}

service/src/main/java/lcsb/mapviewer/services/interfaces/ILdapService.java

+package lcsb.mapviewer.services.interfaces;
+
+import java.util.List;
+
+import com.unboundid.ldap.sdk.LDAPException;
+
+import lcsb.mapviewer.model.user.ConfigurationElementTypeGroup;
+import lcsb.mapviewer.services.UserDTO;
+
+/**
+ * Connection service to LDAP server.
+ * 
+ * @author Piotr Gawron
+ *
+ */
+public interface ILdapService {
+
+  /**
+   * Checks if login and password match
+   * 
+   * @param login
+   *          user login
+   * @param password
+   *          password
+   * @return true if user login/password match
+   * @throws LDAPException
+   *           thrown when there is problem with LDAP connection
+   */
+  boolean login(String login, String password) throws LDAPException;
+
+  /**
+   * Returns list of user names available in the LDAP server.
+   * 
+   * @return list of user names
+   * @throws LDAPException
+   *           thrown when there is problem with LDAP connection
+   */
+  List<String> getUsernames() throws LDAPException;
+
+  /**
+   * Returns user data information from LDAP for given login.
+   * 
+   * @param login
+   *          user for which we obtain data
+   * @return user data information from LDAP for given login or null if such user
+   *         doesn't exist
+   * @throws LDAPException
+   *           thrown when there is problem with LDAP connection
+   */
+  UserDTO getUserByLogin(String login) throws LDAPException;
+
+  /**
+   * Checks if LDAP configuration
+   * ({@link ConfigurationElementTypeGroup#LDAP_CONFIGURATION}) is valid.
+   * 
+   * @return true if LDAP configuration
+   *         ({@link ConfigurationElementTypeGroup#LDAP_CONFIGURATION}) is valid
+   */
+  boolean isValidConfiguratio();
+
+}

service/src/main/resources/applicationContext-service.xml

@@ -23,6 +23,8 @@
 	
 	<bean id="LayoutService" class="lcsb.mapviewer.services.impl.LayoutService"/>
 
+	<bean id="LdapService" class="lcsb.mapviewer.services.impl.LdapService"/>
+
 	<bean id="LogService" class="lcsb.mapviewer.services.impl.LogService"/>
 
 	<bean id="MiriamService" class="lcsb.mapviewer.services.impl.MiriamService"/>

service/src/test/java/lcsb/mapviewer/services/impl/LdapServiceTest.java

+package lcsb.mapviewer.services.impl;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mockito;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+import org.springframework.test.annotation.Rollback;
+
+import com.unboundid.ldap.listener.InMemoryDirectoryServer;
+import com.unboundid.ldap.listener.InMemoryDirectoryServerConfig;
+import com.unboundid.ldap.sdk.LDAPConnection;
+
+import lcsb.mapviewer.model.user.ConfigurationElementType;
+import lcsb.mapviewer.services.ServiceTestFunctions;
+import lcsb.mapviewer.services.UserDTO;
+
+@Rollback(true)
+public class LdapServiceTest extends ServiceTestFunctions {
+  static Logger logger = Logger.getLogger(LdapServiceTest.class);
+
+  LdapService ldapService;
+
+  @Before
+  public void setUp() throws Exception {
+    try {
+      configurationService.setConfigurationValue(ConfigurationElementType.LDAP_BASE_DN, "dc=uni,dc=lu");
+      configurationService.setConfigurationValue(ConfigurationElementType.LDAP_OBJECT_CLASS, "person");
+
+      ldapService = Mockito.spy(LdapService.class);
+      ldapService.setConfigurationService(configurationService);
+      Mockito.when(ldapService.getConnection()).thenAnswer(new Answer<LDAPConnection>() {
+
+        @Override
+        public LDAPConnection answer(InvocationOnMock invocation) throws Throwable {
+          // Create the configuration to use for the server.
+          InMemoryDirectoryServerConfig config = new InMemoryDirectoryServerConfig("dc=uni,dc=lu");
+          config.addAdditionalBindCredentials("uid=piotr.gawron,cn=users,cn=accounts,dc=uni,dc=lu", "test_passwd");
+          config.setSchema(null);
+
+          // Create the directory server instance, populate it with data from the
+          // "test-data.ldif" file, and start listening for client connections.
+          InMemoryDirectoryServer ds = new InMemoryDirectoryServer(config);
+          ds.importFromLDIF(true, "testFiles/ldap/testdata.ldif");
+          ds.startListening();
+          return ds.getConnection();
+        }
+      });
+
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+  @After
+  public void tearDown() throws Exception {
+  }
+
+  @Test
+  public void testIsValidConfiguration() throws Exception {
+    try {
+      assertTrue(ldapService.isValidConfiguratio());
+      configurationService.setConfigurationValue(ConfigurationElementType.LDAP_BASE_DN, "");
+      assertFalse(ldapService.isValidConfiguratio());
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+  @Test
+  public void testLogin() throws Exception {
+    try {
+      assertTrue(ldapService.login("piotr.gawron", "test_passwd"));
+      assertFalse(ldapService.login("piotr.gawron", "invalid_password"));
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+  @Test
+  public void testGetUsernames() throws Exception {
+    try {
+      List<String> list = ldapService.getUsernames();
+      assertEquals(2, list.size());
+      assertTrue(list.contains("piotr.gawron"));
+      assertFalse(list.contains("john.doe"));
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+  @Test
+  public void testGetUsernamesWithFiltering() throws Exception {
+    try {
+      configurationService.setConfigurationValue(ConfigurationElementType.LDAP_FILTER,
+          "(memberof=cn=owncloud,cn=groups,cn=accounts,dc=uni,dc=lu)");
+
+      List<String> list = ldapService.getUsernames();
+      assertEquals(1, list.size());
+      assertTrue(list.contains("piotr.gawron"));
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+  @Test
+  public void testGetUserByLogin() throws Exception {
+    try {
+      UserDTO user = ldapService.getUserByLogin("piotr.gawron");
+      assertEquals("Piotr", user.getFirstName());
+      assertEquals("Gawron", user.getLastName());
+      assertEquals("piotr.gawron", user.getLogin());
+      assertEquals("piotr.gawron@uni.lu", user.getEmail());
+      assertNotNull(user.getBindDn());
+    } catch (Exception e) {
+      e.printStackTrace();
+      throw e;
+    }
+  }
+
+}

service/testFiles/ldap/testdata.ldif

+version: 1
+
+dn: dc=uni,dc=lu
+objectClass: top
+objectClass: domain
+dc: uni
+
+dn: cn=accounts,dc=uni,dc=lu
+objectClass: extensibleObject
+cn: accounts
+
+dn: cn=users,cn=accounts,dc=uni,dc=lu
+objectClass: extensibleObject
+cn: users
+
+dn: uid=piotr.gawron,cn=users,cn=accounts,dc=uni,dc=lu
+objectClass: mepOriginEntry
+objectClass: ipaSshGroupOfPubKeys
+objectClass: posixaccount
+objectClass: inetuser
+objectClass: krbprincipalaux
+objectClass: krbticketpolicyaux
+objectClass: organizationalperson
+objectClass: inetorgperson
+objectClass: ipasshuser
+objectClass: top
+objectClass: person
+objectClass: ipaobject
+cn: Piotr Gawron
+gidNumber: 369550501
+homeDirectory: /home/piotr.gawron
+ipaUniqueID: adf723e6-20e4-11e5-8907-001a4ae51219
+sn: Gawron
+uid: piotr.gawron
+uidNumber: 369550501
+displayName: Piotr Gawron
+gecos: Piotr Gawron
+givenName: Piotr
+initials: PG
+krbLastPwdChange: 20180608111630Z
+krbPasswordExpiration: 20190223111630Z
+krbPrincipalName: piotr.gawron@UNI.LU
+loginShell: /bin/bash
+mail: piotr.gawron@uni.lu
+memberOf: cn=lcsb,cn=groups,cn=accounts,dc=uni,dc=lu
+memberOf: ipaUniqueID=d7549fa2-03a2-11e5-95f9-00163e0a4f7b,cn=hbac,dc=uni,dc
+ =lu
+memberOf: ipaUniqueID=eff7677e-03a2-11e5-add5-00163e0a4f7b,cn=sudorules,cn=s
+ udo,dc=uni,dc=lu
+memberOf: ipaUniqueID=f10ec0f6-7ef6-11e5-957b-001a4ae5121e,cn=hbac,dc=uni,dc
+ =lu
+memberOf: ipaUniqueID=2cf9b59e-7ef7-11e5-89c0-001a4ae5121e,cn=sudorules,cn=s
+ udo,dc=uni,dc=lu
+memberOf: ipaUniqueID=eeb5f68e-9775-11e5-81fb-00163e0a4f7b,cn=hbac,dc=uni,dc
+ =lu