bundles/org.eclipse.equinox.p2.ui/src/org/eclipse/equinox/internal/p2/ui/viewers/CertificateLabelProvider.java

/*******************************************************************************
 * Copyright (c) 2008 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.equinox.internal.p2.ui.viewers;

import java.security.cert.X509Certificate;
import org.eclipse.equinox.internal.provisional.security.ui.X500PrincipalHelper;
import org.eclipse.equinox.internal.provisional.security.ui.X509CertificateViewDialog;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Shell;

/**
 * A label provider that displays X509 certificates.
 */
public class CertificateLabelProvider implements ILabelProvider {

	@Override
	public Image getImage(Object element) {
		return null;
	}

	@Override
	public String getText(Object element) {
		if (element instanceof TreeNode) {
			Object o = ((TreeNode) element).getValue();
			if (o instanceof X509Certificate) {
				X509Certificate cert = (X509Certificate) o;
				return getText(cert);
			}
		}
		return ""; //$NON-NLS-1$
	}

	@Override
	public void addListener(ILabelProviderListener listener) {
		// do nothing
	}

	@Override
	public void dispose() {
		// do nothing
	}

	@Override
	public boolean isLabelProperty(Object element, String property) {
		return false;
	}

	@Override
	public void removeListener(ILabelProviderListener listener) {
		// do nothing
	}

	/**
	 * Returns a string that can be used as readable label for a certificate. This
	 * hides the internal implementation classes needed to produce this label.
	 */
	public static String getText(X509Certificate cert) {
		X500PrincipalHelper principalHelper = new X500PrincipalHelper(cert.getSubjectX500Principal());
		return principalHelper.getCN() + "; " + principalHelper.getOU() + "; " //$NON-NLS-1$ //$NON-NLS-2$
				+ principalHelper.getO();
	}

	/**
	 * Opens a dialog to present detailed information about a certificate. This
	 * hides the internal implementation classes needed open this dialog.
	 */
	public static void openDialog(Shell shell, X509Certificate cert) {
		// create and open dialog for certificate chain
		X509CertificateViewDialog certificateViewDialog = new X509CertificateViewDialog(shell, cert);
		certificateViewDialog.open();
	}
}