/**   @version 1.0 2004-08-11   @author Cay Horstmann*/import java.net.*;import java.awt.*;import java.awt.event.*;import java.io.*;import java.util.*;import javax.naming.*;import javax.naming.directory.*;import javax.swing.*;/**   This program demonstrates access to a hierarchical databaseuses through LDAP*/public class LDAPTest{     public static void main(String[] args)   {        JFrame frame = new LDAPFrame();      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      frame.setVisible(true);   }}/**   The frame that holds the data panel and the navigation buttons.*/class LDAPFrame extends JFrame{   public LDAPFrame()   {        setTitle("LDAPTest");      setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);      JPanel northPanel = new JPanel();      northPanel.setLayout(new java.awt.GridLayout(1, 2, 3, 1));      northPanel.add(new JLabel("uid", SwingConstants.RIGHT));      uidField = new JTextField();      northPanel.add(uidField);      add(northPanel, BorderLayout.NORTH);      JPanel buttonPanel = new JPanel();      add(buttonPanel, BorderLayout.SOUTH);      findButton = new JButton("Find");      findButton.addActionListener(new         ActionListener()         {            public void actionPerformed(ActionEvent event)            {               findEntry();            }         });      buttonPanel.add(findButton);      saveButton = new JButton("Save");      saveButton.addActionListener(new         ActionListener()         {            public void actionPerformed(ActionEvent event)            {               saveEntry();            }         });      buttonPanel.add(saveButton);            deleteButton = new JButton("Delete");      deleteButton.addActionListener(new         ActionListener()         {            public void actionPerformed(ActionEvent event)            {               deleteEntry();            }         });      buttonPanel.add(deleteButton);      addWindowListener(new         WindowAdapter()         {              public void windowClosing(WindowEvent event)            {                 try               {                                     if (context != null) context.close();               }               catch (NamingException e)                {                  e.printStackTrace();               }            }        });   }   /**      Finds the entry for the uid in the text field.   */   public void findEntry()   {      try      {                            if (scrollPane != null) remove(scrollPane);         String dn = "uid=" + uidField.getText() + ",ou=people,dc=mycompany,dc=com";         if (context == null) context = getContext();                  attrs = context.getAttributes(dn);         dataPanel = new DataPanel(attrs);         scrollPane = new JScrollPane(dataPanel);         add(scrollPane, BorderLayout.CENTER);         validate();         uid = uidField.getText();      }      catch (NamingException e)       {         JOptionPane.showMessageDialog(this, e);      }      catch (IOException e)       {         JOptionPane.showMessageDialog(this, e);      }         }   /**      Saves the changes that the user made.   */   public void saveEntry()   {      try      {         if (dataPanel == null) return;         if (context == null) context = getContext();         if (uidField.getText().equals(uid)) // update existing entry         {            String dn = "uid=" + uidField.getText() + ",ou=people,dc=mycompany,dc=com";            Attributes editedAttrs = dataPanel.getEditedAttributes();            NamingEnumeration<? extends Attribute> attrEnum = attrs.getAll();             while (attrEnum.hasMore())             {               Attribute attr = attrEnum.next();               String id = attr.getID();               Object value = attr.get();               Attribute editedAttr = editedAttrs.get(id);               if (editedAttr != null && !attr.get().equals(editedAttr.get()))                  context.modifyAttributes(dn, DirContext.REPLACE_ATTRIBUTE,                     new BasicAttributes(id, editedAttr.get()));            }         }         else // create new entry         {            String dn = "uid=" + uidField.getText() + ",ou=people,dc=mycompany,dc=com";            attrs = dataPanel.getEditedAttributes();            Attribute objclass = new BasicAttribute("objectClass");            objclass.add("uidObject");            objclass.add("person");            attrs.put(objclass);            attrs.put("uid", uidField.getText());            context.createSubcontext(dn, attrs);         }         findEntry();      }      catch (NamingException e)       {         JOptionPane.showMessageDialog(LDAPFrame.this, e);         e.printStackTrace();      }      catch (IOException e)       {         JOptionPane.showMessageDialog(LDAPFrame.this, e);         e.printStackTrace();      }         }   /**      Deletes the entry for the uid in the text field.   */   public void deleteEntry()   {      try      {         String dn = "uid=" + uidField.getText() + ",ou=people,dc=mycompany,dc=com";         if (context == null) context = getContext();         context.destroySubcontext(dn);         uidField.setText("");         remove(scrollPane);         scrollPane = null;         repaint();      }      catch (NamingException e)       {         JOptionPane.showMessageDialog(LDAPFrame.this, e);         e.printStackTrace();      }      catch (IOException e)       {         JOptionPane.showMessageDialog(LDAPFrame.this, e);         e.printStackTrace();      }         }   /**      Gets a context from the properties specified in the file ldapserver.properties      @return the directory context   */   public static DirContext getContext()      throws NamingException, IOException   {        Properties props = new Properties();      FileInputStream in = new FileInputStream("ldapserver.properties");      props.load(in);      in.close();      String url = props.getProperty("ldap.url");      String username = props.getProperty("ldap.username");      String password = props.getProperty("ldap.password");      Hashtable<String, String> env = new Hashtable<String, String>();      env.put(Context.SECURITY_PRINCIPAL, username);      env.put(Context.SECURITY_CREDENTIALS, password);      DirContext initial = new InitialDirContext(env);      DirContext context = (DirContext) initial.lookup(url);      return context;   }   public static final int DEFAULT_WIDTH = 300;   public static final int DEFAULT_HEIGHT = 200;     private JButton findButton;   private JButton saveButton;   private JButton deleteButton;   private JTextField uidField;   private DataPanel dataPanel;   private Component scrollPane;   private DirContext context;   private String uid;   private Attributes attrs;}/**   This panel displays the contents of a result set.*/class DataPanel extends JPanel{   /**      Constructs the data panel.      @param attributes the attributes of the given entry   */   public DataPanel(Attributes attrs) throws NamingException   {      setLayout(new java.awt.GridLayout(0, 2, 3, 1));      NamingEnumeration<? extends Attribute> attrEnum = attrs.getAll();       while (attrEnum.hasMore())       {         Attribute attr = attrEnum.next();         String id = attr.getID();         NamingEnumeration<?> valueEnum = attr.getAll();          while (valueEnum.hasMore())          {            Object value = valueEnum.next();            if (id.equals("userPassword"))               value = new String((byte[]) value);                        JLabel idLabel = new JLabel(id, SwingConstants.RIGHT);            JTextField valueField = new JTextField("" + value);            if (id.equals("objectClass"))               valueField.setEditable(false);            if (!id.equals("uid"))            {               add(idLabel);               add(valueField);            }         }      }   }   public Attributes getEditedAttributes()   {      Attributes attrs = new BasicAttributes();      for (int i = 0; i < getComponentCount(); i += 2)      {         JLabel idLabel = (JLabel) getComponent(i);         JTextField valueField = (JTextField) getComponent(i + 1);         String id = idLabel.getText();         String value = valueField.getText();         if (id.equals("userPassword"))            attrs.put("userPassword", value.getBytes());                     else if (!id.equals("") && !id.equals("objectClass"))            attrs.put(id, value);      }      return attrs;   }}