Java tutorial
/** * ========================================================================================== * = JAHIA'S DUAL LICENSING - IMPORTANT INFORMATION = * ========================================================================================== * * http://www.jahia.com * * Copyright (C) 2002-2017 Jahia Solutions Group SA. All rights reserved. * * THIS FILE IS AVAILABLE UNDER TWO DIFFERENT LICENSES: * 1/GPL OR 2/JSEL * * 1/ GPL * ================================================================================== * * IF YOU DECIDE TO CHOOSE THE GPL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS: * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * * 2/ JSEL - Commercial and Supported Versions of the program * =================================================================================== * * IF YOU DECIDE TO CHOOSE THE JSEL LICENSE, YOU MUST COMPLY WITH THE FOLLOWING TERMS: * * Alternatively, commercial and supported versions of the program - also known as * Enterprise Distributions - must be used in accordance with the terms and conditions * contained in a separate written agreement between you and Jahia Solutions Group SA. * * If you are unsure which license is appropriate for your use, * please contact the sales department at sales@jahia.com. */ package org.jahia.utils; import org.apache.commons.codec.binary.Base64; import org.apache.commons.lang.StringUtils; import org.jahia.services.content.JCRNodeWrapper; import org.jahia.settings.SettingsBean; import org.slf4j.Logger; import javax.jcr.RepositoryException; import javax.servlet.http.HttpServletRequest; import java.io.UnsupportedEncodingException; import java.net.MalformedURLException; import java.net.URL; import java.util.Collections; import java.util.Set; import java.util.zip.DataFormatException; import java.util.zip.Deflater; import java.util.zip.Inflater; /** * User: david * Date: 1/19/11 * Time: 3:01 PM */ public class Url { private static final Logger logger = org.slf4j.LoggerFactory.getLogger(Url.class); public static final Set<String> LOCALHOSTS = Collections.singleton("localhost"); /** * Encode facet filter URL parameter * @param inputString facet filter parameter * @return filter encoded for URL query parameter usage */ public static String encodeUrlParam(String inputString) { if (StringUtils.isEmpty(inputString)) { return inputString; } // Compress the bytes byte[] output = new byte[2048]; Deflater compresser = new Deflater(); try { compresser.setInput(inputString.getBytes("UTF-8")); compresser.finish(); int compressedDataLength = compresser.deflate(output); byte[] copy = new byte[compressedDataLength]; System.arraycopy(output, 0, copy, 0, Math.min(output.length, compressedDataLength)); return Base64.encodeBase64URLSafeString(copy); } catch (UnsupportedEncodingException e) { logger.warn("Not able to encode facet URL: " + inputString, e); } return inputString; } /** * Decode facet filter URL parameter * @param inputString enocded facet filter URL query parameter * @return decoded facet filter parameter */ public static String decodeUrlParam(String inputString) { if (StringUtils.isEmpty(inputString)) { return inputString; } byte[] input = Base64.decodeBase64(inputString); // Decompress the bytes Inflater decompresser = new Inflater(); decompresser.setInput(input, 0, input.length); byte[] result = new byte[2048]; String outputString = ""; try { int resultlength = decompresser.inflate(result); decompresser.end(); outputString = new String(result, 0, resultlength, "UTF-8"); } catch (DataFormatException e) { logger.warn("Not able to decode facet URL: " + inputString, e); } catch (UnsupportedEncodingException e) { logger.warn("Not able to decode facet URL: " + inputString, e); } return outputString; } public static boolean isLocalhost(String host) { return host != null && LOCALHOSTS.contains(host); } public static String appendServerNameIfNeeded(JCRNodeWrapper node, String nodeURL, HttpServletRequest request) throws RepositoryException, MalformedURLException { if (!SettingsBean.getInstance().isUrlRewriteUseAbsoluteUrls()) { return nodeURL; } String requestServerName = request.getServerName(); if (isLocalhost(requestServerName)) { return nodeURL; } String serverName = node.getResolveSite().getServerName(); if (!StringUtils.isEmpty(serverName) && !isLocalhost(serverName) && !requestServerName.equals(serverName)) { int serverPort = SettingsBean.getInstance().getSiteURLPortOverride(); if (serverPort == 0) { serverPort = request.getServerPort(); } if (serverPort == 80 && "http".equals(request.getScheme()) || serverPort == 443 && "https".equals(request.getScheme())) { serverPort = -1; } nodeURL = new URL(request.getScheme(), serverName, serverPort, nodeURL).toString(); } return nodeURL; } /** * Returns the server URL, including scheme, host and port. * The URL is in the form <code><scheme><host>:<port></code>, * e.g. <code>http://www.jahia.org:8080</code>. The port is omitted in case * of standard HTTP (80) and HTTPS (443) ports. * * @return the server URL, including scheme, host and port */ public static String getServer(HttpServletRequest request) { return getServer(request.getScheme(), request.getServerName(), request.getServerPort()); } public static String getServer(HttpServletRequest request, String servername) { return getServer(request.getScheme(), servername, request.getServerPort()); } public static String getServer(String scheme, String host, int port) { StringBuilder url = new StringBuilder(); int portOverride = SettingsBean.getInstance().getSiteURLPortOverride(); if (portOverride != 0) { port = portOverride; } url.append(scheme).append("://").append(host); if (!(port == 80 && "http".equals(scheme) || port == 443 && "https".equals(scheme))) { url.append(":").append(port); } return url.toString(); } }