/*******************************************************************************
* Copyright (c) 2009, Cloudsmith Inc and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Cloudsmith Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.p2.testserver.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URI;
import java.net.URISyntaxException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Redirects n times, before redirecting to final location (a path on same server).
*
*/
public class Redirector extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
response.setContentType("text/html"); //$NON-NLS-1$
PrintWriter writer = response.getWriter();
doStatus(request, response, writer);
}
protected void doStatus(HttpServletRequest request, HttpServletResponse response, PrintWriter writer) {
String requestPath = request.getRequestURI();
String[] result = requestPath.split("/"); //$NON-NLS-1$
if (result.length < 3 && !"redirect".equalsIgnoreCase(result[1])) //$NON-NLS-1$
{
getServletContext().log("Error Servlet requires being configured to get /redirect/count paths. Example /redirect/500, got" + requestPath); //$NON-NLS-1$
return;
}
// get the error code
int iterations = 0;
try {
iterations = Integer.parseInt(result[2]);
} catch (NumberFormatException e) {
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
getServletContext().log("Number format exception in /redirect/count path.", e); //$NON-NLS-1$
return;
}
String redirectPath;
if (iterations == 0) {
if (result.length > 3)
redirectPath = requestPath.substring("/redirect/0".length()); //$NON-NLS-1$
else
redirectPath = null;
} else {
redirectPath = "/redirect/" + Integer.valueOf(iterations - 1); //$NON-NLS-1$
for (int i = 3; i < result.length; i++)
redirectPath += "/" + result[i]; //$NON-NLS-1$
}
if (redirectPath != null) {
// perform a redirect
URI location = null;
try {
location = new URI(request.getScheme(), null, request.getServerName(), request.getServerPort(), //
redirectPath, null, null);
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
htmlPage(writer, "Internal error constructing redirect URL", false); //$NON-NLS-1$
return;
}
response.setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
response.setHeader("Location", location.toString()); //$NON-NLS-1$
} else {
// set the errorCode as the response and write a message
if (writer != null)
htmlPage(writer, "Redirected Successfully", false); //$NON-NLS-1$
}
}
public void doHead(HttpServletRequest request, HttpServletResponse response) {
// produce same response as for GET, but no content (writer == null)
doStatus(request, response, null);
}
private void htmlPage(PrintWriter writer, String body, boolean consoleOutput) {
if (consoleOutput)
System.err.println(body);
writer.println("<html>"); //$NON-NLS-1$
writer.println("<body>"); //$NON-NLS-1$
writer.println(body);
writer.println("<br/>"); //$NON-NLS-1$
writer.println("</body>"); //$NON-NLS-1$
writer.println("</html>"); //$NON-NLS-1$
writer.flush();
}
}