package at.gv.egiz.pdfas.web.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.URLEncoder;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import at.gv.egiz.pdfas.web.config.WebConfiguration;
import at.gv.egiz.pdfas.web.helper.HTMLFormater;
import at.gv.egiz.pdfas.web.helper.PdfAsHelper;
/**
* Servlet implementation class ErrorPage
*/
public class ErrorPage extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final Logger logger = LoggerFactory
.getLogger(ErrorPage.class);
/**
* @see HttpServlet#HttpServlet()
*/
public ErrorPage() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
process(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
process(request, response);
}
protected void process(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
if (PdfAsHelper.getFromDataUrl(request)) {
// redirect to here!
response.sendRedirect(PdfAsHelper.generateErrorURL(request,
response));
return;
} else {
String errorURL = PdfAsHelper.getErrorURL(request, response);
Throwable e = PdfAsHelper
.getSessionException(request, response);
String message = PdfAsHelper.getSessionErrMessage(request,
response);
if (errorURL != null && WebConfiguration.isProvidePdfURLinWhitelist(errorURL)) {
String template = PdfAsHelper.getErrorRedirectTemplateSL();
template = template.replace("##ERROR_URL##",
errorURL);
if (e != null && WebConfiguration.isShowErrorDetails()) {
template = template.replace("##CAUSE##",
URLEncoder.encode(e.getMessage(), "UTF-8"));
} else {
template = template.replace("##CAUSE##",
"");
}
if (message != null) {
template = template.replace("##ERROR##", URLEncoder.encode(message, "UTF-8"));
} else {
template = template.replace("##ERROR##", "Unbekannter Fehler");
}
response.setContentType("text/html");
response.getWriter().write(template);
response.getWriter().close();
} else {
if(!WebConfiguration.isProvidePdfURLinWhitelist(errorURL)) {
logger.warn(errorURL + " is not allowed by whitelist");
}
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
pw.write("Error Page:");
if (message != null) {
pw.write("" + message + "
");
}
if (e != null && WebConfiguration.isShowErrorDetails()) {
pw.write(""
+ HTMLFormater.formatStackTrace(e.getStackTrace())
+ "
");
}
pw.write("");
pw.close();
}
}
}
}