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/* * Copyright 2003-2006 Rick Knowles <winstone-devel at lists sourceforge net> * Distributed under the terms of either: * - the common development and distribution license (CDDL), v1.0; or * - the GNU Lesser General Public License, v2.1 or later */package winstone;import java.io.IOException;import java.io.PrintWriter;import java.io.StringWriter;import java.io.Writer;import java.util.Date;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.http.HttpServlet;/** * A simple servlet that writes out the body of the error * * @author <a href="mailto:[email protected]">Rick Knowles</a> * @version $Id: ErrorServlet.java,v 1.3 2006/02/28 07:32:47 rickknowles Exp $ */public class ErrorServlet extends HttpServlet { public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException { Integer sc = (Integer) request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE); String msg = (String) request.getAttribute(RequestDispatcher.ERROR_MESSAGE); Throwable err = (Throwable) request.getAttribute(RequestDispatcher.ERROR_EXCEPTION); StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); if (err != null) { err.printStackTrace(pw); } else { pw.println("(none)"); } pw.flush(); // If we are here there was no error servlet, so show the default error page String output = Launcher.RESOURCES.getString("WinstoneResponse.ErrorPage", // BUG: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') // new String[] { sc + "", (msg == null ? "" : msg), sw.toString(), // FIXED: new String[] { sc + "", URIUtil.htmlEscape(msg == null ? "" : msg), URIUtil.htmlEscape(sw.toString()), Launcher.RESOURCES.getString("ServerVersion"), "" + new Date() }); response.setContentLength(output.getBytes(response.getCharacterEncoding()).length); Writer out = response.getWriter(); out.write(output); out.flush(); }} |