plugins/org.eclipse.net4j.util.ui/src/org/eclipse/net4j/util/ui/security/InteractiveCredentialsProvider.java

/*
 * Copyright (c) 2008, 2011-2013, 2015, 2016, 2019 Eike Stepper (Loehne, Germany) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Eike Stepper - initial API and implementation
 *    Christian W. Damus (CEA LIST) - bug 399306
 */
package org.eclipse.net4j.util.ui.security;

import org.eclipse.net4j.util.internal.ui.messages.Messages;
import org.eclipse.net4j.util.security.CredentialsUpdateOperation;
import org.eclipse.net4j.util.security.IPasswordCredentials;
import org.eclipse.net4j.util.security.IPasswordCredentialsProvider2;
import org.eclipse.net4j.util.security.IPasswordCredentialsUpdate;
import org.eclipse.net4j.util.security.IPasswordCredentialsUpdateProvider;
import org.eclipse.net4j.util.security.SecurityUtil;
import org.eclipse.net4j.util.ui.UIUtil;

import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.dnd.Clipboard;
import org.eclipse.swt.dnd.TextTransfer;
import org.eclipse.swt.dnd.Transfer;
import org.eclipse.swt.widgets.Shell;

import java.text.MessageFormat;

/**
 * @author Eike Stepper
 * @since 2.0
 */
public class InteractiveCredentialsProvider implements IPasswordCredentialsProvider2, IPasswordCredentialsUpdateProvider
{
  public InteractiveCredentialsProvider()
  {
  }

  @Override
  public boolean isInteractive()
  {
    return true;
  }

  @Override
  public IPasswordCredentials getCredentials()
  {
    return getCredentials(null);
  }

  /**
   * @since 3.3
   */
  @Override
  public IPasswordCredentials getCredentials(String realm)
  {
    IPasswordCredentials[] credentials = new IPasswordCredentials[1];

    UIUtil.syncExec(() -> {
      CredentialsDialog dialog = new CredentialsDialog(UIUtil.getShell(), realm);
      if (dialog.open() == CredentialsDialog.OK)
      {
        credentials[0] = dialog.getCredentials();
      }
    });

    return credentials[0];
  }

  /**
   * @since 3.4
   */
  @Override
  public IPasswordCredentialsUpdate getCredentialsUpdate(String userID, CredentialsUpdateOperation operation)
  {
    return getCredentialsUpdate(null, userID, operation);
  }

  /**
   * @since 3.4
   */
  @Override
  public IPasswordCredentialsUpdate getCredentialsUpdate(String realm, String userID, CredentialsUpdateOperation operation)
  {
    IPasswordCredentialsUpdate[] update = { null };

    UIUtil.syncExec(() -> {
      Shell shell = UIUtil.getShell();

      if (operation == CredentialsUpdateOperation.CHANGE_PASSWORD)
      {
        CredentialsUpdateDialog dialog = new CredentialsUpdateDialog(shell, realm, userID);
        if (dialog.open() == Window.OK)
        {
          update[0] = dialog.getCredentials();
        }
      }
      else
      {
        CredentialsResetDialog dialog = new CredentialsResetDialog(shell, realm, userID);
        if (dialog.open() == Window.OK)
        {
          update[0] = dialog.getCredentials();
          String newPassword = SecurityUtil.toString(update[0].getNewPassword());

          MessageDialog msg = new MessageDialog(shell, Messages.getString("InteractiveCredentialsProvider.0"), null, //$NON-NLS-1$
              MessageFormat.format(Messages.getString("InteractiveCredentialsProvider.1"), //$NON-NLS-1$
                  userID, newPassword),
              MessageDialog.INFORMATION, new String[] { Messages.getString("InteractiveCredentialsProvider.2"), //$NON-NLS-1$
                  IDialogConstants.OK_LABEL },
              0)
          {

            @Override
            protected void buttonPressed(int buttonId)
            {
              if (buttonId == 0)
              {
                copyToClipboard();
                // Don't close the dialog
              }
              else
              {
                // Close the dialog in the usual way
                super.buttonPressed(IDialogConstants.OK_ID);
              }
            }

            private void copyToClipboard()
            {
              Clipboard clipboard = new Clipboard(getShell().getDisplay());

              try
              {
                clipboard.setContents(new Object[] { newPassword }, new Transfer[] { TextTransfer.getInstance() });
              }
              finally
              {
                clipboard.dispose();
              }
            }
          };

          msg.open();
        }
      }
    });

    return update[0];
  }
}