/*
* Copyright 2003 Federal Chancellery Austria
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package at.gv.egovernment.moa.id.auth.servlet;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import at.gv.egovernment.moa.id.auth.MOAIDAuthConstants;
import at.gv.egovernment.moa.id.auth.WrongParametersException;
import at.gv.egovernment.moa.logging.Logger;
import at.gv.egovernment.moa.util.URLDecoder;
/**
* Base class for MOA-ID Auth Servlets, providing standard error handling
* and constant names.
*
* @author Paul Ivancsics
* @version $Id$
*/
public class AuthServlet extends HttpServlet implements MOAIDAuthConstants {
/**
* Handles an error.
*
"/errorpage-auth.jsp"
)WrongParametersException
.
* @param req servlet request
* @param resp servlet response
*/
protected void handleWrongParameters(WrongParametersException ex, HttpServletRequest req, HttpServletResponse resp) {
Logger.error(ex.toString());
req.setAttribute("WrongParameters", ex.getMessage());
// forward this to errorpage-auth.jsp where the HTML error page is generated
ServletContext context = getServletContext();
RequestDispatcher dispatcher = context.getRequestDispatcher("/errorpage-auth.jsp");
try {
dispatcher.forward(req, resp);
} catch (ServletException e) {
Logger.error(e);
} catch (IOException e) {
Logger.error(e);
}
}
/**
* Logs all servlet parameters for debugging purposes.
*/
protected void logParameters(HttpServletRequest req) {
for (Enumeration params = req.getParameterNames(); params.hasMoreElements(); ) {
String parname = (String)params.nextElement();
Logger.debug("Parameter " + parname + req.getParameter(parname));
}
}
/**
* Parses the request input stream for parameters, assuming parameters are encoded UTF-8
* (no standard exists how browsers should encode them).
*
* @param req servlet request
*
* @return mapping parameter name -> value
*
* @throws IOException if parsing request parameters fails.
*
* @throws FileUploadException if parsing request parameters fails.
*/
protected Map getParameters(HttpServletRequest req)
throws IOException, FileUploadException {
Map parameters = new HashMap();
if (ServletFileUpload.isMultipartContent(req))
{
// request is encoded as mulitpart/form-data
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = null;
upload = new ServletFileUpload(factory);
List items = null;
items = upload.parseRequest(req);
for (int i = 0; i < items.size(); i++)
{
FileItem item = (FileItem) items.get(i);
if (item.isFormField())
{
// Process only form fields - no file upload items
String logString = item.getString("UTF-8");
// TODO use RegExp
String startS = "