package local.cmu.qatar.db;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
public class Login extends HttpServlet
{
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
boolean newUser = true;
Cookie unameCookie = null;
String username = request.getParameter("username");
String password = request.getParameter("password");
/* Returns an array of all the cookies ever sent by the
web-server to the user */
Cookie allCookies[] = request.getCookies();
/* Check if a username cookie has already been sent by the
server. If so, do not create and send such a cookie */
if(allCookies != null && allCookies.length != 0)
{
for (Cookie c : allCookies)
{
if(c.getName().equals("username"))
{
newUser = false;
unameCookie = c;
}
}
}
/* Create a new username cookie to store the username */
if((newUser == true) && (username.length() != 0))
{
unameCookie = new Cookie("username", username);
unameCookie.setMaxAge(86400); /* one day in s */
/* addCookie must precede getWriter!!!*/
response.addCookie(unameCookie);
}
/* Send the HTML body to welcome the user if password !empty */
response.setContentType("text/html");
PrintWriter outstream = response.getWriter();
outstream.println("");
outstream.println(" Welcome " + unameCookie.getValue() + "! ");
outstream.println("");
outstream.println("");
if(password.length() == 0)
{
outstream.println(" Error 101: Registration Failed
");
outstream.println("Your password can not be empty!");
}
else
{
outstream.println(" Welcome " + username + "
");
outstream.println("Your registration is successful!");
}
outstream.println("");
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
doGet(request,response);
}
}