code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/server/CouponVerifier.java

   1 /*
   2  * Copyright 2010 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.server;
  20
  21 import gr.ebs.gss.server.domain.UserClass;
  22 import gr.ebs.gss.server.ejb.TransactionHelper;
  23
  24 import java.io.IOException;
  25 import java.util.concurrent.Callable;
  26
  27 import javax.servlet.http.HttpServletRequest;
  28 import javax.servlet.http.HttpServletResponse;
  29
  30 /**
  31  * The servlet that handles user registration.
  32  *
  33  * @author past
  34  */
  35 public class CouponVerifier extends BaseServlet {
  36         /**
  37          * The request parameter name for the verification flag.
  38          */
  39         private static final String VERIFY_PARAM = "verify";
  40
  41         /**
  42          * The request parameter name for the coupon code.
  43          */
  44         private static final String CODE_PARAM = "code";
  45
  46         /**
  47          * The request parameter name for the firstname.
  48          */
  49         private static final String FIRSTNAME_PARAM = "firstname";
  50
  51         /**
  52          * The request parameter name for the lastname.
  53          */
  54         private static final String LASTNAME_PARAM = "lastname";
  55
  56         /**
  57          * The request parameter name for the username.
  58          */
  59         private static final String USERNAME_PARAM = "username";
  60
  61         /**
  62          * The request parameter name for the e-mail.
  63          */
  64         private static final String EMAIL_PARAM = "email";
  65
  66         /**
  67          * The serial version UID of the class.
  68          */
  69         private static final long serialVersionUID = 1L;
  70
  71         @Override
  72         public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
  73                 String firstname = request.getParameter(FIRSTNAME_PARAM);
  74                 String lastname = request.getParameter(LASTNAME_PARAM);
  75                 String email = request.getParameter(EMAIL_PARAM);
  76                 final String username = request.getParameter(USERNAME_PARAM);
  77                 final String code = request.getParameter(CODE_PARAM);
  78                 String verify = request.getParameter(VERIFY_PARAM);
  79                 response.setContentType("text/html");
  80
  81                 // Validate input parameters.
  82                 if (username == null || username.isEmpty()) {
  83                         handleException(response, "No username was specified");
  84                         return;
  85                 } else if (firstname == null || firstname.isEmpty()) {
  86                         handleException(response, "No firstname was specified");
  87                         return;
  88                 } else if (lastname == null || lastname.isEmpty()) {
  89                         handleException(response, "No lastname was specified");
  90                         return;
  91                 } else if (email == null || email.isEmpty()) {
  92                         handleException(response, "No email was specified");
  93                         return;
  94                 } else if (code == null || code.isEmpty()) {
  95                         handleException(response, "No code was specified");
  96                         return;
  97                 } else if (!"on".equalsIgnoreCase(verify)) {
  98                         String error = encode("You must verify that the coupon belongs to you");
  99                         String errorUrl = "couponSubmission.jsp?error=" + error;
 100                         errorUrl += "&username=" + username;
 101                         errorUrl += "&firstname=" + firstname;
 102                         errorUrl += "&lastname=" + lastname;
 103                         errorUrl += "&code=" + code;
 104                         errorUrl += "&email=" + email;
 105                         response.sendRedirect(errorUrl);
 106                         return;
 107                 }
 108
 109                 try {
 110                         UserClass newClass = new TransactionHelper<UserClass>().tryExecute(new Callable<UserClass>() {
 111                                 @Override
 112                                 public UserClass call() throws Exception {
 113                                         return getService().upgradeUserClass(username, code);
 114                                 }
 115
 116                         });
 117                         response.sendRedirect("couponSubmitted.jsp?newQuota=" + newClass.getQuotaAsString());
 118                 } catch (Exception e) {
 119                         handleException(response, e.getMessage());
 120                 }
 121         }
 122
 123         private void handleException(HttpServletResponse response, String error) throws IOException {
 124                 String errorUrl = "coupon.jsp?error=" + error;
 125                 response.sendRedirect(errorUrl);
 126         }
 127 }