package de.uhilger.wbx.web;
import java.io.IOException;
import java.security.Principal;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.catalina.servlets.DefaultServlet;
/**
*
*/
public class ViewServlet extends DefaultServlet {
private static final Logger logger = Logger.getLogger(ViewServlet.class.getName());
private static final String HOME_CTX = "/home";
/**
* Handles the HTTP GET method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String contextPath = request.getContextPath();
if(HOME_CTX.equals(contextPath)) {
String userName = getUserName(request);
if (userName != null) {
String urlUser = getUrlUser(request, userName);
if(userName.equals(urlUser)) {
seiteAusgeben(request, response);
} else {
logger.fine("Wrong user.");
}
} else {
logger.fine("Missing login.");
}
} else {
seiteAusgeben(request, response);
}
}
private void seiteAusgeben(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
ServletOutputStream out = response.getOutputStream();
printHeader(out);
super.doGet(request, response);
printFooter(out);
}
private void printHeader(ServletOutputStream out) throws IOException {
out.print("");
out.print("");
out.print("");
}
private void printFooter(ServletOutputStream out) throws IOException {
out.print("");
}
private String getUrlUser(HttpServletRequest request, String userName) throws IOException {
String result = "";
String requestUrlStr = request.getRequestURL().toString();
String contextPath = request.getContextPath();
if(contextPath != null && requestUrlStr != null && userName != null) {
int start = requestUrlStr.indexOf(contextPath);
start += contextPath.length();
start++;
int end = start + userName.length();
try {
result = requestUrlStr.substring(start, end);
} catch(Exception ex) {
logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex);
}
}
return result;
}
private String getUserName(HttpServletRequest hr) {
String userName = null;
Object p = hr.getUserPrincipal();
if (p instanceof Principal) {
userName = ((Principal) p).getName();
}
return userName;
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}
}