/*
* Copyright (c) 2003-2011, KNOPFLERFISH project
* 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 KNOPFLERFISH project 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.
*/
package org.knopflerfish.bundle.httproot;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.Vector;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.osgi.framework.ServiceReference;
public class InfoServlet extends HttpServlet {
private static final long serialVersionUID = 6985595442868609560L;
private final ServiceReference httpSR;
public InfoServlet(final ServiceReference httpSR) {
this.httpSR = httpSR;
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException,
IOException
{
// Handle just as GET
doGet(request, response);
}
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
PrintWriter out = response.getWriter();
response.setContentType("text/html");
printHeader(out);
printMain(out);
printFooter(out);
try {
} catch (Exception e) {
out.println("<pre>");
e.printStackTrace(out);
out.println("</pre>");
}
}
void printMain(PrintWriter out) throws IOException {
final String[] keys = httpSR.getPropertyKeys();
Arrays.sort(keys);
out.println("<h2>Web server properties</h2>");
out.println("<table>");
for(int i = 0; i < keys.length; i++) {
out.println("<tr>");
out.println("<td>" + keys[i] + "</td>");
out.println("<td>");
printObject(out, httpSR.getProperty(keys[i]));
out.println("<td>");
out.println("</tr>");
}
out.println("</table>");
}
void printObject(PrintWriter out, Object val) throws IOException {
if(val == null) {
out.println("null");
} else if(val.getClass().isArray()) {
printArray(out, (Object[])val);
} else if(val instanceof Vector) {
printVector(out, (Vector)val);
} else if(val instanceof Map) {
printMap(out, (Map)val);
} else if(val instanceof Set) {
printSet(out, (Set)val);
} else if(val instanceof Dictionary) {
printDictionary(out, (Dictionary)val);
} else {
out.print(val);
// out.print(" (" + val.getClass().getName() + ")");
}
}
void printDictionary(PrintWriter out, Dictionary d) throws IOException {
// Sort keys using a sorted set.
final TreeSet keys = new TreeSet();
for(Enumeration e = d.keys(); e.hasMoreElements();) {
final String key = (String) e.nextElement();
keys.add(key);
}
out.println("<table>");
for(Iterator it = keys.iterator(); it.hasNext();) {
final String key = (String) it.next();
final Object val = d.get(key);
out.println("<tr>");
out.println("<td>");
printObject(out, key);
out.println("</td>");
out.println("<td>");
printObject(out, val);
out.println("</td>");
out.println("</tr>");
}
out.println("</table>");
}
void printMap(PrintWriter out, Map m) throws IOException {
// Sorted map
final TreeMap ms = new TreeMap(m);
out.println("<table>");
for(Iterator it = ms.keySet().iterator(); it.hasNext();) {
final Object key = it.next();
final Object val = ms.get(key);
out.println("<tr>");
out.println("<td>");
printObject(out, key);
out.println("</td>");
out.println("<td>");
printObject(out, val);
out.println("</td>");
out.println("</tr>");
}
out.println("</table>");
}
void printArray(PrintWriter out, Object[] a) throws IOException {
for(int i = 0; i < a.length; i++) {
printObject(out, a[i]);
if(i < a.length - 1) {
out.println("<br>");
}
}
}
void printSet(PrintWriter out, Set a) throws IOException {
for(Iterator it = a.iterator(); it.hasNext();) {
printObject(out, it.next());
if(it.hasNext()) {
out.println("<br>");
}
}
}
void printVector(PrintWriter out, Vector a) throws IOException {
for(int i = 0; i < a.size(); i++) {
printObject(out, a.elementAt(i));
if(i < a.size() - 1) {
out.println("<br>");
}
}
}
void printHeader(PrintWriter out) throws IOException {
out.println("<html>");
out.println("<head>");
out.println(" <meta http-equiv=\"CACHE-CONTROL\" content=\"NO-CACHE\"/>");
out.println(" <title>Knopflerfish OSGi Http Service Info</title>");
out.println(" <link href=\"/knopflerfish.css\" rel=\"stylesheet\" type=\"text/css\">");
out.println(" <link rel=\"shortcut icon\" href=\"/images/favicon.png\"/>");
out.println("</head>");
out.println("<body>");
out.println(" <div id=\"main\">");
out.println(" <div id=\"header\">");
out.println(" <div id=\"header_logo\">");
out.println(" <a href=\"/\"><img src=\"/images/kf300_black.png\" border=0 alt=\"knopflerfish logo\"></a>");
out.println(" </div>");
out.println(" <div id=\"header_menu\">");
out.println(" <a class=\"button_closed\" href=\"/index.html\">Home</a>");
out.println(" <a class=\"button_closed\" href=\"/docs/\">Documentation</a>");
out.println(" <a class=\"button_open\" href=\"/servlet/knopflerfish-info\">Http-Server-Info</a>");
out.println(" <a class=\"button_closed\" href=\"http://www.knopflerfish.org/\">www.knopflerfish.org</a>");
out.println(" </div>");
out.println(" </div>");
out.println(" <div id=\"mainblock\">");
}
void printFooter(PrintWriter out) throws IOException {
out.println(" </div>");
out.println(" <div id=\"footer\">");
out.println(" <div id=\"copyright\">");
out.println(" Copyright © 2003-2011 The Knopflerfish Project. All rights reserved.");
out.println(" </div>");
out.println(" </div>");
out.println(" </div>");
out.println("</body>");
out.println("</html>");
}
}