/* * Copyright (c) 2005, John Mettraux, OpenWFE.org * All rights reserved. *  * Redistribution and use in source and binary forms, with or without  * modification, are permitted provided that the following conditions are met: *  * . Redistributions of source code must retain the above copyright notice, this *   list of conditions and the following disclaimer.   *  * . Redistributions in binary form must reproduce the above copyright notice,  *   this list of conditions and the following disclaimer in the documentation  *   and/or other materials provided with the distribution. *  * . Neither the name of the "OpenWFE" nor the names of its contributors may be *   used to endorse or promote products derived from this software without *   specific prior written permission. *  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE  * POSSIBILITY OF SUCH DAMAGE. * * $Id: WebUtils.java,v 1.5 2005/05/17 16:40:15 jmettraux Exp $ *///// Web.java//// john.mettraux@openwfe.org//// generated with // jtmpl 1.1.01 2004/05/19 (john.mettraux@openwfe.org)//package openwfe.org.net;import javax.servlet.http.HttpServletRequest;/** * Some methods to use in webapplications * * <p><font size=2>CVS Info : * <br>$Author: jmettraux $ * <br>$Id: WebUtils.java,v 1.5 2005/05/17 16:40:15 jmettraux Exp $ </font> * * @author john.mettraux@openwfe.org */public abstract class WebUtils{    /*    private final static org.apache.log4j.Logger log = org.apache.log4j.Logger        .getLogger(WebUtils.class.getName());    */    //    // STATIC METHODS    /**     * (I should really replace this with quote and unquote stuff)     */    public static String neutralize (final String html)    {        if (html == null) return "null";        String s = html;        s.replaceAll(">", "&gt;");        s.replaceAll("<", "&lt;");        return s;    }    /**     * Turns something like 'http://localhost:7080/nada' into     * 'http://absolute.path.com/nada'.     */    public static String makeUrlAbsolute (final String url)    {        if (url.indexOf("/localhost/") < 0) return url;        if (url.indexOf("/localhost:") < 0) return url;        String hostname = "localhost";        try        {            hostname = java.net.InetAddress.getLocalHost().getHostName();        }        catch (final Throwable t)        {            // ignore        }        return url.replaceFirst("localhost", hostname);    }    /**     * (I can't remember if Sun's servlet API already provides this method      * for making a link absolute...)     * Anyway, this method returns the webapp root URL path, it's heavily used     * in Droflo for it to be usable from :7080/droflo or from :7085/     */    public static String getWebappUrl (final HttpServletRequest req)    {        final String href = req.getRequestURL().toString();        int index = 0;        for (int i=0; i<4; i++)        {            index += (href.substring(index).indexOf("/") + 1);        }        String rootPath = href.substring(0, index);        //log.debug("getWebappUrl() rootPath is >"+rootPath+"<");        final String webappName =             req.getSession().getServletContext().getServletContextName();        if (webappName != null)            rootPath += webappName;        return rootPath;    }}