| /******************************************************************************* |
| * Copyright (c) 2006, 2016 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.help.internal.base.remote; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.help.AbstractContentExtensionProvider; |
| import org.eclipse.help.IContentExtension; |
| import org.eclipse.help.internal.UAElement; |
| import org.eclipse.help.internal.base.HelpBasePlugin; |
| import org.eclipse.help.internal.base.util.ProxyUtil; |
| import org.eclipse.help.internal.dynamic.DocumentReader; |
| |
| public class RemoteExtensionProvider extends AbstractContentExtensionProvider { |
| |
| private static final String PATH_EXTENSIONS = "/extension"; //$NON-NLS-1$ |
| private static final String PROTOCOL_HTTP = "http"; //$NON-NLS-1$ |
| |
| private DocumentReader reader; |
| |
| public RemoteExtensionProvider() { |
| RemoteHelp.addPreferenceChangeListener(event -> contentChanged()); |
| } |
| |
| @Override |
| public IContentExtension[] getContentExtensions(String locale) { |
| if (RemoteHelp.isEnabled()) { |
| List<IContentExtension> contributions = new ArrayList<>(); |
| PreferenceFileHandler handler = new PreferenceFileHandler(); |
| String isEnabled[] = handler.isEnabled(); |
| for (int ic = 0; ic < handler.getTotalRemoteInfocenters(); ic++) { |
| if (isEnabled[ic].equalsIgnoreCase("true")) { //$NON-NLS-1$ |
| InputStream in = null; |
| try { |
| URL url = RemoteHelp.getURL(ic, PATH_EXTENSIONS); |
| |
| if(url.getProtocol().equalsIgnoreCase(PROTOCOL_HTTP)) |
| { |
| in = ProxyUtil.getStream(url); |
| } |
| else |
| { |
| in = HttpsUtility.getHttpsStream(url); |
| } |
| |
| if (reader == null) { |
| reader = new DocumentReader(); |
| } |
| UAElement element = reader.read(in); |
| IContentExtension[] children = element.getChildren(IContentExtension.class); |
| for (int contrib = 0; contrib < children.length; contrib++) { |
| contributions.add(children[contrib]); |
| } |
| } catch (IOException e) { |
| String msg = "I/O error while trying to contact the remote help server"; //$NON-NLS-1$ |
| HelpBasePlugin.logError(msg, e); |
| } catch (Throwable t) { |
| String msg = "Internal error while reading topic extensions from remote server"; //$NON-NLS-1$ |
| HelpBasePlugin.logError(msg, t); |
| } finally { |
| if (in != null) { |
| try { |
| in.close(); |
| } catch (IOException e) { |
| // nothing more we can do |
| } |
| } |
| } |
| } |
| } |
| return contributions.toArray(new IContentExtension[contributions.size()]); |
| } |
| return new IContentExtension[0]; |
| } |
| } |