package org.paneris.bibliomania;

 import java.io.File;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.util.Random;

 import javax.servlet.http.Cookie;

 import javax.servlet.http.HttpServletRequest;

 import org.melati.Melati;

 import org.melati.login.HttpSessionAccessHandler;

 import org.melati.util.HttpUtil;

 import org.melati.util.UnexpectedExceptionException;

 public class BibliomaniaAccessHandler extends HttpSessionAccessHandler {

   protected String loginPageServletClassName() {

     return "org.paneris.bibliomania.BibliomaniaLogin";

   }

   private static String key = null;

   private static final Random random = new Random();

   public String loginPageURL(Melati melati,

                              HttpServletRequest request) {

     StringBuffer url = new StringBuffer();

     HttpUtil.appendZoneURL(url, request);

     url.append('/');

     url.append(loginPageServletClassName());

     return url.toString();

   }

   public void logUsIn(Melati melati, org.melati.poem.User user) {

     super.logUsIn(melati,user);

     if (user == null) return;

     // funky code to to ensure users have logged in before accessing some

     // plain html pages

     // @see rewrites.apache

     if (key == null) {

       key = "" + random.nextInt();

       try {

         File tmpkeys = new File("/tmp/bibliomaniakey");

         if (!tmpkeys.exists())

           tmpkeys.mkdir();

         File[] old = tmpkeys.listFiles();

         for (int f = 0; f < old.length; ++f)

           old[f].delete();

         new FileOutputStream(new File(tmpkeys, key)).close();

       }

       catch (IOException e) {

         throw new UnexpectedExceptionException(e);

       }

     }

     Cookie c = new Cookie("reg", key);

     c.setPath("/");

     melati.getResponse().addCookie(c);

   }

 }