/**
* Copyright (c) 2011-2014, OpenIoT
*
* This file is part of OpenIoT.
*
* OpenIoT is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* OpenIoT is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenIoT. If not, see <http://www.gnu.org/licenses/>.
*
* Contact: OpenIoT mailto: info@openiot.eu
* @author Behnaz Bostanipour
* @author Timotee Maret
* @author Julien Eberle
*/
package org.openiot.gsn.http.ac;
/**
* Created by IntelliJ IDEA.
* User: Behnaz Bostanipour
* Date: Apr 20, 2010
* Time: 8:01:31 PM
* To change this template use File | Settings | File Templates.
*/
import org.openiot.gsn.Main;
import org.openiot.gsn.http.WebConstants;
import org.apache.log4j.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;
public class MyGroupManagementServlet extends HttpServlet
{
private static transient Logger logger = Logger.getLogger( MyGroupManagementServlet.class );
/****************************************** Servlet Methods*******************************************/
/******************************************************************************************************/
public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException
{
Vector groupList=null;
res.setContentType("text/html");
PrintWriter out = res.getWriter();
ConnectToDB ctdb = null;
// Get the session
HttpSession session = req.getSession();
User user = (User) session.getAttribute("user");
if (user == null)
{
this.redirectToLogin(req,res);
}
else
{
this.checkSessionScheme(req,res);
if(user.isAdmin()== false)
{
res.sendError( WebConstants.ACCESS_DENIED , "Access denied." );
}
else
{
this.setSessionPrintWriter(req,out);
try
{
ctdb = new ConnectToDB();
this.printHeader(out);
this.printLayoutMastHead(out,user);
this.printLayoutContent(out);
groupList=ctdb.getGroupList();
for(int i=0;i<groupList.size();i++)
{
printGroupInformation(out,(Group)(groupList.get(i)));
}
out.println("<div class=\"spacer\"></div>");
if(groupList.size()==0)
{
out.println("<p><B> There is no entry in the Group List ! </B></p>");
}
}
catch(Exception e)
{
logger.error("ERROR IN doGet");
logger.error(e.getMessage(),e);
}
finally
{
if(ctdb!=null)
{
ctdb.closeStatement();
ctdb.closeConnection();
}
}
}
}
this.printLayoutFooter(out);
}
/****************************************** HTML Printing Methods*******************************************/
/***********************************************************************************************************/
private void printHeader(PrintWriter out)
{
out.println("<HTML>");
out.println("<HEAD>");
//For Java Script!!
//this.printEmbeddedJS(out);
out.println("<script type=\"text/javascript\" src=\"/js/acjavascript.js\"></script>");
out.println("<TITLE>Group Management</TITLE>");
out.println(" <link rel=\"stylesheet\" media=\"screen\" type=\"text/css\" href=\"/style/acstyle.css\"/>");
//printStyle(out);
out.println("</HEAD>");
//out.println("<body>");
out.println("<body onload=\"loadScroll()\" onunload=\"saveScroll()\" >");
out.println("<div id=\"container\">");
out.println("<div class=box>");
}
private void printLayoutMastHead(PrintWriter out, User user)
{
out.println("<div id=\"masthead\">");
out.println("<div class=\"image_float\"><img src=\"/style/gsn-mark.png\" alt=\"GSN logo\" /></div><br>");
out.println("<h1>Group Management</h1>");
out.println("<div class=\"spacer\"></div>");
out.println("</div>");
out.println("<div id=\"mastheadborder\">");
this.printLinks(out);
this.printUserName(out, user);
out.println("<br><br>");
out.println("</div>");
}
private void printLayoutContent(PrintWriter out)
{
out.println("<div id=\"content\">");
}
private void printLayoutFooter(PrintWriter out)
{
out.println("</div>");
out.println("<div id=\"footer\">");
out.println(" <p align=\"center\"><FONT COLOR=\"#000000\"/>Powered by <a class=\"nonedecolink\" href=\"http://globalsn.sourceforge.net/\">GSN</a>, Distributed Information Systems Lab, EPFL 2010</p>");
out.println("</div>");
out.println("</div>");
out.println("</div>");
out.println("</body>");
out.println("</html>");
}
private void printLinks(PrintWriter out)
{
out.println("<a class=linkclass href=\"/gsn/MyAdminManagementServlet\">admin only</a>");
out.println("<a class=linkclass href=\"/gsn/MyLogoutHandlerServlet\">logout</a>");
}
private void printUserName(PrintWriter out, User user)
{
//String username=user.getUserName();
out.println("<p id=\"login\">logged in as : "+user.getUserName()+"</p>");
}
private void printGroupInformation(PrintWriter out,Group group) throws ServletException
{
out.println("<h2>New Group Entry </h2>");
out.println("<table>");
out.println("<tr><th> group name </th>");
out.println("<th> group structure</th>");
out.println("<th> admin decision</th>");
out.println("<th> admin decision</th></tr>");
out.println("<tr>");
this.printInputs(out,group);
this.printGroupStructureLink(out, group.getGroupName());
this.printForms(out,group.getGroupName());
out.println("</tr>");
out.println("</table>");
out.println("<br>");
}
private void printGroupStructureLink(PrintWriter out, String groupname)
{
String groupurl="/gsn/MyGroupHtmlResultSetServlet?groupname="+groupname;
out.println("<ul class=displaylinkul >");
out.println("<td style=text-align:center><LI class=displaylinkli><a href="+groupurl+" onClick=\"poptastic(this.href); return false;\"> view </a></LI>");
out.println("</td>");
out.println("</ul>");
}
private void printInputs(PrintWriter out,Group group)
{
out.println("<td>"+group.getGroupName()+"</td>");
}
private void printForms(PrintWriter out,String groupname)
{
this.printDeleteForm(out,groupname);
this.printChangeForm(out,groupname);
}
private void printDeleteForm(PrintWriter out,String groupname)
{
out.println("<FORM ACTION=/gsn/MyDeleteGroupServlet METHOD=POST>");
out.println("<INPUT TYPE=HIDDEN NAME=groupname VALUE="+groupname+">");
out.println("<td><INPUT TYPE=SUBMIT class=creategroupbuttonstyle VALUE=\"Delete Group\"></td>");
out.println("</FORM>");
}
private void printChangeForm(PrintWriter out,String groupname)
{
out.println("<FORM ACTION=/gsn/MyChangeGroupCombinationServlet METHOD=GET>");
out.println("<INPUT TYPE=HIDDEN NAME=groupname VALUE="+groupname+">");
out.println("<td><INPUT TYPE=SUBMIT class=creategroupbuttonstyle VALUE=\"Change Group \"></td>");
out.println("</FORM>");
}
/****************************************** Client Session related Methods*******************************************/
/********************************************************************************************************************/
private void setSessionPrintWriter(HttpServletRequest req,PrintWriter out)
{
req.getSession().setAttribute("out",out);
}
private void checkSessionScheme(HttpServletRequest req, HttpServletResponse res)throws IOException
{
if(req.getScheme().equals("https")== true)
{
if((req.getSession().getAttribute("scheme")==null))
{
req.getSession().setAttribute("scheme","https");
}
}
else if(req.getScheme().equals("http")== true )
{
if((req.getSession().getAttribute("scheme")==null))
{
req.getSession().setAttribute("scheme","http");
}
res.sendRedirect("https://"+req.getServerName()+":"+ Main.getContainerConfig().getSSLPort()+"/gsn/MyGroupManagementServlet");
}
}
private void redirectToLogin(HttpServletRequest req, HttpServletResponse res)throws IOException
{
req.getSession().setAttribute("login.target", HttpUtils.getRequestURL(req).toString());
res.sendRedirect("/gsn/MyLoginHandlerServlet");
}
}