src/java/org/mxchange/jusercore/model/user/email_address/JobsUserEmailChangeSessionBean.java

   1 /*
   2  * Copyright (C) 2016 - 2022 Free Software Foundation
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Affero General Public License as
   6  * published by the Free Software Foundation, either version 3 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU Affero General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Affero General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17 package org.mxchange.jusercore.model.user.email_address;
  18
  19 import java.text.MessageFormat;
  20 import java.util.Date;
  21 import java.util.List;
  22 import javax.ejb.EJB;
  23 import javax.ejb.EJBException;
  24 import javax.ejb.Stateless;
  25 import javax.persistence.NoResultException;
  26 import javax.persistence.Query;
  27 import org.mxchange.jjobs.enterprise.BaseJobsEnterpriseBean;
  28 import org.mxchange.jusercore.model.email_address.ChangeableEmailAddress;
  29 import org.mxchange.jusercore.model.email_address.EmailAddressChange;
  30 import org.mxchange.jusercore.model.user.UserSessionBeanRemote;
  31 import org.mxchange.juserlogincore.login.UserLoginUtils;
  32
  33 /**
  34  * A session-scoped bean for changing email addresses
  35  * <p>
  36  * @author Roland Häder<roland@mxchange.org>
  37  */
  38 @Stateless (name = "userEmailChange", description = "A bean handling user email changes")
  39 public class JobsUserEmailChangeSessionBean extends BaseJobsEnterpriseBean implements UserEmailChangeSessionBeanRemote {
  40
  41         /**
  42          * Serial number
  43          */
  44         private static final long serialVersionUID = 182_698_165_971_548L;
  45
  46         /**
  47          * User bean
  48          */
  49         @EJB (lookup = "java:global/jjobs-ejb/user!org.mxchange.jusercore.model.user.UserSessionBeanRemote")
  50         private UserSessionBeanRemote userBean;
  51
  52         /**
  53          * Default constructor
  54          */
  55         public JobsUserEmailChangeSessionBean () {
  56                 // Call super constructor
  57                 super("jms/jjobs-queue-factory", "jms/jjobs-email-queue"); //NOI18N
  58         }
  59
  60         @Override
  61         public void enqueueEmailAddressForChange (final ChangeableEmailAddress emailChange, final String baseUrl) {
  62                 // Trace message
  63                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange: emailChange={1},baseUrl={2} - CALLED!", this.getClass().getSimpleName(), emailChange, baseUrl)); //NOI18N
  64
  65                 // Email address change should be valid
  66                 if (null == emailChange) {
  67                         // Abort here
  68                         throw new NullPointerException("emailChange is null"); //NOI18N
  69                 } else if (emailChange.getEmailChangeUser() == null) {
  70                         // Throw NPE again
  71                         throw new NullPointerException("emailChange.emailChangeUser is null"); //NOI18N
  72                 } else if (emailChange.getEmailChangeUser().getUserId() == null) {
  73                         // Throw NPE again
  74                         throw new NullPointerException("emailChange.emailChangeUser.userId is null"); //NOI18N
  75                 } else if (emailChange.getEmailChangeUser().getUserId() < 1) {
  76                         // Not valid id
  77                         throw new IllegalArgumentException(MessageFormat.format("emailChange.emailChangeUser.userId={0} is invalid.", emailChange.getEmailChangeUser().getUserId())); //NOI18N
  78                 } else if (emailChange.getEmailAddress().trim().isEmpty()) {
  79                         // Email address is empty
  80                         throw new IllegalArgumentException("emailChange.emaiLAddress is empty."); //NOI18N
  81                 } else if (this.isEmailAddressEnqueued(emailChange.getEmailAddress())) {
  82                         // Email address is already enqueued
  83                         throw new EJBException(MessageFormat.format("Email address {0} is already enqueued.", emailChange.getEmailAddress())); //NOI18N
  84                 }
  85
  86                 // The email change is not (yet) there, add secure hash and "created" timestamp
  87                 emailChange.setEmailChangeCreated(new Date());
  88                 this.generateSecureHash(emailChange);
  89
  90                 // Make user managed
  91                 emailChange.setEmailChangeUser(this.createManaged(emailChange.getEmailChangeUser()));
  92
  93                 // Persist it
  94                 //@TODO Fix email delivery then allow this: this.getEntityManager().persist(emailChange);
  95                 // Send email
  96                 this.sendEmail("User email change", "user_email_change", emailChange.getEmailChangeUser(), baseUrl, null); //NOI18N
  97
  98                 // Trace message
  99                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.enqueueEmailAddressForChange - EXIT!", this.getClass().getSimpleName())); //NOI18N
 100         }
 101
 102         @Override
 103         @SuppressWarnings ("unchecked")
 104         public List<ChangeableEmailAddress> fetchAllQueuedAddressChanges () {
 105                 // Trace message
 106                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: CALLED!", this.getClass().getSimpleName())); //NOI18N
 107
 108                 // Get named query
 109                 final Query query = this.getEntityManager().createNamedQuery("AllEmailAddressChanges", ChangeableEmailAddress.class); //NOI18N
 110
 111                 // Get all entries
 112                 final List<ChangeableEmailAddress> emailAddresses = query.getResultList();
 113
 114                 // Trace message
 115                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.allQueuedAddresses: emailAddresses.size()={1} - EXIT!", this.getClass().getSimpleName(), emailAddresses.size())); //NOI18N
 116
 117                 // Return it
 118                 return emailAddresses;
 119         }
 120
 121         @Override
 122         public void updateEmailAddress (final ChangeableEmailAddress emailAddress) {
 123                 // Trace message
 124                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.updateEmailAddress: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
 125
 126                 // Email address change should be valid
 127                 if (null == emailAddress) {
 128                         // Abort here
 129                         throw new NullPointerException("emailAddress is null"); //NOI18N
 130                 } else if (emailAddress.getEmailChangeId() == null) {
 131                         // Throw NPE again
 132                         throw new NullPointerException("emailAddress.emailChangeId is null"); //NOI18N
 133                 } else if (emailAddress.getEmailChangeId() < 1) {
 134                         // Not valid
 135                         throw new IllegalArgumentException(MessageFormat.format("emailAddress.emailChangeId={0} is not valid.", emailAddress.getEmailChangeId())); //NOI18N
 136                 } else if (emailAddress.getEmailAddress().trim().isEmpty()) {
 137                         // Email address is empty
 138                         throw new IllegalArgumentException("emailAddress.emaiLAddress is empty."); //NOI18N
 139                 } else if (!this.isEmailAddressEnqueued(emailAddress.getEmailAddress())) {
 140                         // Email address is not enqueued
 141                         throw new EJBException(MessageFormat.format("Email address {0} is not enqueued.", emailAddress.getEmailAddress())); //NOI18N
 142                 }
 143
 144                 throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
 145         }
 146
 147         /**
 148          * Generates a secure, unique hash for given email address change. This
 149          * requires to check if the hash is really not there.
 150          * <p>
 151          * @param emailAddressChange Email address change
 152          */
 153         private void generateSecureHash (final ChangeableEmailAddress emailAddressChange) {
 154                 // Email address change should be valid
 155                 if (null == emailAddressChange) {
 156                         // Abort here
 157                         throw new NullPointerException("emailAddressChange is null"); //NOI18N
 158                 } else if (emailAddressChange.getEmailAddress().trim().isEmpty()) {
 159                         // Email address is empty
 160                         throw new IllegalArgumentException("emailAddressChange.emaiLAddress is empty."); //NOI18N
 161                 }
 162
 163                 // Initialize loop with null
 164                 String hash = null;
 165
 166                 // Default is not used
 167                 boolean isUsed = true;
 168
 169                 // Search for free hash
 170                 while (isUsed) {
 171                         // Generate hash, there is already in UserUtils a nice method that can be used for this purpose.
 172                         hash = UserLoginUtils.encryptPassword(String.format("%s:%s", emailAddressChange.getEmailAddress(), emailAddressChange.toString())); //NOI18N
 173
 174                         // The hash *may* be unique, better test it
 175                         final Query query = this.getEntityManager().createNamedQuery("SearchEmailChangeByHash", EmailAddressChange.class); //NOI18N
 176
 177                         // Set hash as parameter
 178                         query.setParameter("hash", hash); //NOI18N
 179
 180                         // Try to get single result
 181                         try {
 182                                 // Get single result
 183                                 final ChangeableEmailAddress dummy = (ChangeableEmailAddress) query.getSingleResult();
 184                         } catch (final NoResultException ex) {
 185                                 // Not found
 186                                 isUsed = false;
 187                         }
 188                 }
 189
 190                 // hash should not be null and set
 191                 assert (hash != null) : "hash is null"; //NOI18N
 192                 assert (!hash.isEmpty()) : "hash is empty"; //NOI18N
 193
 194                 // Set it in email change
 195                 emailAddressChange.setEmailChangeHash(hash);
 196         }
 197
 198         /**
 199          * Checks whether given email address is already enqueued
 200          * <p>
 201          * @param emailAddress Email address to check
 202          * <p>
 203          * @return Whether the email address has already been enqueued
 204          */
 205         private boolean isEmailAddressEnqueued (final String emailAddress) {
 206                 // Trace message
 207                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: emailAddress={1} - CALLED!", this.getClass().getSimpleName(), emailAddress)); //NOI18N
 208
 209                 // Default is not found
 210                 boolean isFound = false;
 211
 212                 // Fetch all records
 213                 for (final ChangeableEmailAddress address : this.fetchAllQueuedAddressChanges()) {
 214                         // Is it found?
 215                         if (address.getEmailAddress().equals(emailAddress)) {
 216                                 // Yes, set flag, skip further iterations
 217                                 isFound = true;
 218                                 break;
 219                         }
 220                 }
 221
 222                 // Trace message
 223                 this.getLoggerBeanLocal().logTrace(MessageFormat.format("{0}.isEmailAddressEnqueued: isFound={1} - EXIT!", this.getClass().getSimpleName(), isFound)); //NOI18N
 224
 225                 // Return it
 226                 return isFound;
 227         }
 228
 229 }