/**
* 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;
import org.openiot.gsn.Main;
import org.openiot.gsn.http.WebConstants;
import org.apache.commons.io.FileUtils;
import org.apache.log4j.Logger;
import javax.servlet.ServletException;
import javax.servlet.http.*;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Vector;
/**
* Created by IntelliJ IDEA.
* User: Behnaz Bostanipour
* Date: Apr 21, 2010
* Time: 8:54:05 PM
* To change this template use File | Settings | File Templates.
*/
public class MyDataSourceCandidateWaitingListServlet extends HttpServlet
{
private static transient Logger logger = Logger.getLogger( MyDataSourceCandidateWaitingListServlet.class );
/****************************************** Servlet Methods*******************************************/
/******************************************************************************************************/
public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException
{
res.setContentType("text/html");
PrintWriter out = res.getWriter();
// Get the session
HttpSession session = req.getSession();
ConnectToDB ctdb = null;
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.printHeader(out);
this.printLayoutMastHead(out, user );
this.printLayoutContent(out);
try
{
ctdb = new ConnectToDB();
Vector v=ctdb.getDataSourceCandidates();
if(v.size()==0)
{
out.println("<p><B>There is no entry in the waiting list !</p></B>");
}
for(int i=0;i<v.size();i++)
{
//printForm(out,(DataSource)(v.get(i)));
printNewEntry(out,(DataSource)(v.get(i)));
}
}
catch(Exception e)
{
out.println("<p><B>Can not print the form !</p></B>");
logger.error("ERROR IN doGet");
logger.error(e.getMessage(),e);
}
finally
{
if(ctdb!=null)
{
ctdb.closeStatement();
ctdb.closeConnection();
}
}
this.printLayoutFooter(out);
}
}
}
public void doPost(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException
{
handleForm(req, res);
doGet(req,res);
}
/****************************************** 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>Virtual Sensor Registration Waiting List</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>Virtual Sensor Registration Waiting List</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 printNewEntry(PrintWriter out,DataSource datasource) throws ServletException
{
out.println("<h2>New Entry In Waiting List</h2>");
out.println("<BR>");
//out.println("<h3>Virtual Sensor Information</h3>");
out.println("<li class=registerli >Virtual Sensor Information </li><br>");
this.printDataSourceInformation(out,datasource);
this.printForm(out,datasource);
out.println("<br>");
}
private void printForm(PrintWriter out,DataSource datasource) throws ServletException
{
out.println("<FORM METHOD=POST>"); // posts to itself
this.printFormInputs(out,datasource);
//out.println("<h3>Admission Decision </h3>");
out.println("<BR>");
out.println("<li class=registerli >Admission Decision </li><br>");
this.printAdmissionPart(out);
out.println("<BR>");
out.println("<BR>");
this.printFormButtons(out);
out.println("</FORM>");
}
private void printFormInputs(PrintWriter out,DataSource datasource)
{
String datasourcename=datasource.getDataSourceName();
out.println("<INPUT TYPE=HIDDEN NAME=datasourcename size=30 VALUE="+datasourcename +">");
}
private void printDataSourceInformation(PrintWriter out,DataSource datasource)
{
out.println("<table>");
out.println("<tr><th>virtual sensor name</th>");
out.println("<th>file name</th>");
out.println("<th>file type</th>");
out.println("<th>stored in</th>");
out.println("<tr><td>"+datasource.getDataSourceName()+"</td>");
out.println("<td>"+datasource.getFileName()+"</td>");
out.println("<td>"+datasource.getFileType()+"</td>");
out.println("<td>"+datasource.getPath() +"</td>");
out.println("</table>");
out.println("<br>");
out.println("<li class=registerli >Virtual Sensor Owner Information</li><br>");
//out.println("<h3>Virtual Sensor Owner Information</h3>");
out.println("<table>");
out.println("<tr><th>owner first name</th>");
out.println("<th>owner last name</th>");
out.println("<th>owner E-mail</th></tr>");
out.println("<tr><td>"+datasource.getOwner().getFirstName() +"</td>");
out.println("<td>"+datasource.getOwner().getLastName() +"</td>");
out.println("<td>"+datasource.getOwner().getEmail() +"</td></tr>");
out.println("</table>");
}
private void printAdmissionPart(PrintWriter out)
{
out.println("<table>");
out.println("<tr><th>Do you allow this virtual sensor registration?</th></tr>");
//out.println("<tr><td><INPUT TYPE=RADIO NAME=register VALUE= Yes><FONT COLOR=#000000> Yes ");
out.println("<tr><td><select name=register id=selectbox>");
out.println("<option value= >Select</option>");
out.println(" <option value=Yes>Yes</option>");
out.println(" <option value=No >No</option>");
out.println(" </select></td></tr>");
out.println("</table>");
out.println("<BR>");
out.println("<table >");
out.println("<tr><th>If No, explain the reason here</th></tr> ");
out.println("<tr><td><TEXTAREA NAME=comments COLS=40 ROWS=6></TEXTAREA></td></tr>");
out.println("</table>");
}
private void printFormButtons(PrintWriter out)
{
//out.println("<table class=transparenttable>");
out.println("<INPUT TYPE=SUBMIT class=sumitbuttonstyle VALUE=\"Submit \">");
out.println("<INPUT TYPE=RESET class=sumitbuttonstyle VALUE=\"Reset\">");
//out.println("</table>");
}
/****************************************** AC Related Methods*****************************************************/
/******************************************************************************************************************/
void handleForm(HttpServletRequest req, HttpServletResponse res)
{
HttpSession session = req.getSession();
PrintWriter out = (PrintWriter) session.getAttribute("out");
ParameterSet pm = new ParameterSet(req);
String comments="";
ConnectToDB ctdb = null;
if(pm.valueForName("register")==null || pm.valueForName("datasourcename")==null ||pm.valueForName("datasourcename").equals(""))
{
return ;
}
else
{
if(pm.valueForName("register").equals("Yes")|| pm.valueForName("register").equals("No"))
{
try
{
ctdb = new ConnectToDB();
User owner = ctdb.getUserFromDataSource(pm.valueForName("datasourcename")); // get the owner of this data source
String message = null;
if(pm.valueForName("register").equals("Yes"))
{
String name = pm.valueForName("datasourcename")+".xml";
File file = new File("virtual-sensors/receivedVSFiles/" + name);
// move the VS into another directory
String newFilePath = "virtual-sensors/" + name;
File newFile = new File(newFilePath);
try {
FileUtils.copyFile(file, newFile);
} catch (IOException e) {
e.printStackTrace();
}
ctdb.updateOneColumnUnderOneCondition(new Column("ISCANDIDATE","no"),new Column("DATASOURCENAME",pm.valueForName("datasourcename")),"ACDATASOURCE");
//send e-mail to the DS owner
message = " your Virtual Sensor '"+pm.valueForName("datasourcename")+"' has been activated.";
}
else if(pm.valueForName("register").equals("No"))
{
ctdb.deleteDataSourceCandidate(pm.valueForName("datasourcename"));
comments=pm.valueForName("comments");
//send e-mail to the DS owner
message = " unfortunately your Virtual Sensor '"+pm.valueForName("datasourcename")+"' will not be activated.\n"+
"The reason for that is the following: "+comments;
}
Emailer email = new Emailer();
// send an email to the Owner of the Resource
String msgHead = "Dear "+owner.getFirstName() +", "+"\n"+"\n";
String msgTail = "Best Regards,"+"\n"+"GSN Team";
String msgBody = "We would like to inform you that"+message+"\n\n";
email.sendEmail( "GSN ACCESS ", "GSN USER",owner.getEmail(),"Virtual Sensor Activation", msgHead, msgBody, msgTail);
}
catch(Exception e)
{
out.println("Exception caught : "+e.getMessage());
}
finally
{
if(ctdb!=null)
{
ctdb.closeStatement();
ctdb.closeConnection();
}
}
}
else
{
return;
}
}
}
/****************************************** Client Session related Methods*******************************************/
/********************************************************************************************************************/
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/MyDataSourceCandidateWaitingListServlet");
}
}
private void redirectToLogin(HttpServletRequest req, HttpServletResponse res)throws IOException
{
req.getSession().setAttribute("login.target", HttpUtils.getRequestURL(req).toString());
res.sendRedirect("/gsn/MyLoginHandlerServlet");
}
}