| /******************************************************************************* |
| * 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.AbstractIndexProvider; |
| import org.eclipse.help.IIndexContribution; |
| import org.eclipse.help.internal.base.HelpBasePlugin; |
| import org.eclipse.help.internal.base.util.ProxyUtil; |
| |
| /* |
| * Provides the TOC data that is located on the remote infocenter, if the system |
| * is configured for remote help. If not, returns no contributions. |
| */ |
| public class RemoteIndexProvider extends AbstractIndexProvider { |
| |
| private static final String PATH_INDEX = "/index"; //$NON-NLS-1$ |
| private static final String PARAM_LANG = "lang"; //$NON-NLS-1$ |
| private static final String PROTOCOL_HTTP = "http"; //$NON-NLS-1$ |
| |
| /* |
| * Constructs a new remote index provider, which listens for remote |
| * help preference changes. |
| */ |
| public RemoteIndexProvider() { |
| RemoteHelp.addPreferenceChangeListener(event -> contentChanged()); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.help.AbstractIndexProvider#getIndexContributions(String) |
| */ |
| @Override |
| public IIndexContribution[] getIndexContributions(String locale) { |
| if (RemoteHelp.isEnabled()) { |
| List<IIndexContribution> contributions = new ArrayList<>(); |
| PreferenceFileHandler handler = new PreferenceFileHandler(); |
| String isEnabled[] = handler.isEnabled(); |
| String [] protocol = handler.getProtocolEntries(); |
| String [] host = handler.getHostEntries(); |
| String [] port = handler.getPortEntries(); |
| String [] path = handler.getPathEntries(); |
| for (int ic = 0; ic < handler.getTotalRemoteInfocenters(); ic++) { |
| if (isEnabled[ic].equalsIgnoreCase("true")) { //$NON-NLS-1$ |
| InputStream in = null; |
| try { |
| URL url; |
| |
| if(protocol[ic].equals(PROTOCOL_HTTP)) |
| { |
| url = RemoteHelp.getURL(ic, PATH_INDEX + '?' + PARAM_LANG + '=' + locale); |
| in = ProxyUtil.getStream(url); |
| } |
| else |
| { |
| url = HttpsUtility.getHttpsURL(protocol[ic], host[ic], port[ic], path[ic]+PATH_INDEX + '?' + PARAM_LANG + '=' + locale); |
| in = HttpsUtility.getHttpsStream(url); |
| } |
| |
| RemoteIndexParser parser = new RemoteIndexParser(); |
| IIndexContribution[] result = parser.parse(in); |
| for (int contrib = 0; contrib < result.length; contrib++) { |
| contributions.add(result[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 index contents 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 IIndexContribution[contributions.size()]); |
| } |
| return new IIndexContribution[0]; |
| } |
| } |