| package org.eclipse.stem.ui.ge.servlet; |
| /******************************************************************************* |
| * Copyright (c) 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| import javax.servlet.ServletException; |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.eclipse.stem.ui.Activator; |
| |
| |
| /** |
| * Servlet that allows the client to verify that the |
| * web server is started and the STEM-GoogleEarth servlets |
| * are deployed. |
| * |
| * If it gets a String "VerifyClient v.v.v" |
| * It returns a String "VerifyServlet v.v.v" |
| * |
| */ |
| public class VerifyServlet extends HttpServlet { |
| |
| private static final long serialVersionUID = 1L; |
| |
| |
| /** |
| * String that we will send the client |
| */ |
| private static String outputText="VerifyServlet "+ |
| Version.version; |
| /** |
| * String that client should send us. |
| */ |
| private static String expectedText="VerifyClient "+ |
| Version.version; |
| /** |
| * |
| * @see javax.servlet.http.HttpServlet#service(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse) |
| */ |
| protected void service(HttpServletRequest request,HttpServletResponse response) |
| throws ServletException, IOException { |
| |
| DataInputStream in = |
| new DataInputStream(request.getInputStream()); |
| response.setContentType("application/octer-stream"); |
| // use ByteArray output |
| ByteArrayOutputStream byteOutput = new ByteArrayOutputStream(); |
| DataOutputStream output = |
| new DataOutputStream(byteOutput); |
| // |
| // read the input from the client |
| // |
| String stringValue = in.readUTF(); |
| if (stringValue.startsWith(expectedText)) { |
| output.writeUTF(outputText); |
| if (stringValue.contains("DEBUG")) { |
| SlideShowServlet.DEBUG = true; |
| } |
| } else { |
| String errmsg = "Error: "+ |
| "Expected: "+expectedText+ |
| " Received: "+stringValue; |
| debug(errmsg); |
| output.writeUTF(errmsg); |
| } |
| output.flush(); |
| byte[] buf = byteOutput.toByteArray(); |
| response.setContentLength(buf.length); |
| ServletOutputStream servletOutput = response.getOutputStream(); |
| servletOutput.write(buf); |
| servletOutput.close(); |
| |
| } |
| |
| |
| @SuppressWarnings("unused") |
| private void errHtml(HttpServletResponse response, String msg) |
| throws IOException { |
| response.setContentType("text/html"); |
| PrintWriter out = new PrintWriter(response.getOutputStream()); |
| out.println("<html>"); |
| out.println("<head><title>VerifyServlet Error</title></head>"); |
| out.println("<body>"); |
| out.println("<p>" + msg + "</p>"); |
| out.println("</body></html>"); |
| out.flush(); |
| } |
| |
| |
| |
| /** |
| * print debug messages to the server log. |
| * @param msg |
| */ |
| private static void debug(String msg) { |
| if (SlideShowServlet.DEBUG) { |
| Activator.logInformation("VerifyServlet: "+msg); |
| } |
| } |
| |
| @SuppressWarnings("unused") |
| private static void debug(String msg,Throwable e) { |
| //log(msg,e); |
| Activator.logInformation(msg); |
| e.printStackTrace(); |
| |
| } |
| } |
| |
| |
