Workspace/Siman/src/org/splat/simer/ConnectionAction.java

   1 package org.splat.simer;
   2
   3 import java.io.IOException;
   4 import java.util.Map;
   5 import java.util.Set;
   6
   7 import javax.security.auth.Subject;
   8 import javax.security.auth.callback.Callback;
   9 import javax.security.auth.callback.CallbackHandler;
  10 import javax.security.auth.callback.NameCallback;
  11 import javax.security.auth.callback.PasswordCallback;
  12 import javax.security.auth.callback.TextOutputCallback;
  13 import javax.security.auth.callback.UnsupportedCallbackException;
  14 import javax.security.auth.login.FailedLoginException;
  15 import javax.security.auth.login.LoginContext;
  16
  17 import org.splat.dal.bo.kernel.User;
  18 import org.splat.som.ApplicationRights;
  19
  20 /**
  21  * User login action.
  22  */
  23 public class ConnectionAction extends Action {
  24
  25         /**
  26          * User name.
  27          */
  28         private String _username = null;
  29         /**
  30          * User password.
  31          */
  32         private String _password = null;
  33         private transient String _backmenu = null;
  34
  35         private String _menuProperty;
  36
  37         /**
  38          * Serial version ID.
  39          */
  40         private static final long serialVersionUID = 6095471616361606231L;
  41
  42         /**
  43          * Handler for login into SIMAN.
  44          */
  45         private class Handler implements CallbackHandler {
  46                 /**
  47                  * {@inheritDoc}
  48                  *
  49                  * @see javax.security.auth.callback.CallbackHandler#handle(javax.security.auth.callback.Callback[])
  50                  */
  51                 @Override
  52                 public void handle(final Callback[] callbacks) throws IOException,
  53                                 UnsupportedCallbackException {
  54                         for (int i = 0; i < callbacks.length; i++) {
  55                                 if (callbacks[i] instanceof TextOutputCallback) {
  56                                         // Display a message according to a specified type
  57                                         LOG.info(((TextOutputCallback) callbacks[i]).getMessage());
  58                                 } else if (callbacks[i] instanceof NameCallback) {
  59                                         // Get the username
  60                                         NameCallback call = (NameCallback) callbacks[i];
  61                                         call.setName(_username);
  62
  63                                 } else if (callbacks[i] instanceof PasswordCallback) {
  64                                         // Get the password
  65                                         if (_password != null) {
  66                                                 PasswordCallback call = (PasswordCallback) callbacks[i];
  67                                                 call.setPassword(_password.toCharArray());
  68                                         }
  69                                 } else {
  70                                         throw new UnsupportedCallbackException(callbacks[i],
  71                                                         "Unrecognized Callback");
  72                                 }
  73                         }
  74                 }
  75         }
  76
  77         // ==============================================================================================================================
  78         // Action execution
  79         // ==============================================================================================================================
  80
  81         /**
  82          * Login the user with the given name and password into SIMAN.
  83          *
  84          * @return SUCCESS if succeeded, INPUT - if some mandatory parameter is absent or FailedLoginException is caught during login, ERROR -
  85          *         if other exception is caught
  86          *
  87          * @see org.splat.kernel.RealmLoginModule
  88          */
  89         @SuppressWarnings("unchecked")
  90         public String doLogin() {
  91                 String res = INPUT;
  92                 if (_username != null && _username.length() > 0) {
  93                         if (_password != null && _password.length() == 0) {
  94                                 _password = null; // User having no password
  95                         }
  96                         try {
  97                                 LoginContext context = new LoginContext("Siman", new Handler());
  98                                 context.login();
  99
 100                                 Subject identity = context.getSubject();
 101                                 Set<User> table = identity.getPrincipals(User.class);
 102                                 if (table.isEmpty()) {
 103                                         throw new Exception();
 104                                 }
 105
 106                                 User user = table.iterator().next(); // The user is (apparently...) the 1st principal
 107                                 ApplicationRights logged = new ApplicationRights(user);
 108                                 if (logged.canContributeToStudy() || logged.canValidate()) {
 109                                         // TODO: Set the search filter according to user preferences
 110                                         Map<String, Object> session = getSession();
 111                                         // Map<String,Object> kfilter = (Map<String, Object>)session.get("knowledge.filter");
 112                                         Map<String, Object> sfilter = (Map<String, Object>) session
 113                                                         .get("study.filter");
 114
 115                                         sfilter.put("state", "ANY");
 116                                         sfilter.put("visibility", "PRIVATE");
 117                                         if (logged.canCreateStudy()) {
 118                                                 sfilter.put("author", String.valueOf(user.getIndex()));
 119                                         }
 120                                 }
 121                                 this.connect(context, user); // Updates the session context
 122
 123                                 setMenuProperty("none");
 124                                 initializationScreenContext(_menuProperty);
 125
 126                                 res = _backmenu;
 127                         } catch (FailedLoginException error) {
 128                                 setErrorCode("message.error.login." + error.getMessage());
 129                                 res = INPUT;
 130                         } catch (Exception error) {
 131                                 LOG.error("Reason:", error);
 132                                 res = ERROR;
 133                         }
 134                 }
 135                 return res;
 136         }
 137
 138         /**
 139          * Disconnect the current user from SIMAN application.
 140          *
 141          * @return SUCCESS if disconnected, ERROR - if exception is caught
 142          */
 143         @SuppressWarnings("unchecked")
 144         public String doLogout() {
 145                 String res;
 146                 try {
 147                         Map<String, Object> session = getSession();
 148                         // Map<String,Object> kfilter = (Map<String, Object>)session.get("knowledge.filter");
 149                         Map<String, Object> sfilter = (Map<String, Object>) session
 150                                         .get("study.filter");
 151                         LoginContext context = (LoginContext) session.get("login.context");
 152
 153                         String connectedUsr = "";
 154                         if (getConnectedUser() != null) {
 155                                 connectedUsr = getConnectedUser().toString();
 156                         }
 157
 158                         LOG.info("Deconnection of " + connectedUsr + ".");
 159
 160                         if (context != null) {
 161                                 context.logout();
 162                         }
 163
 164                         // TODO: ProjectSettings.deleteDownloadDirectory(user);
 165                         if (sfilter != null) {
 166                                 sfilter.put("state", "ANY");
 167                                 sfilter.put("author", "0");
 168                         }
 169
 170                         this.disconnect(); // Updates the session context
 171
 172                         setMenuProperty("none");
 173                         initializationScreenContext(_menuProperty);
 174
 175                         res = _backmenu;
 176                 } catch (Exception error) {
 177                         LOG.error("Reason:", error);
 178                         res = ERROR;
 179                 }
 180                 return res;
 181         }
 182
 183         // ==============================================================================================================================
 184         // Getters and setters
 185         // ==============================================================================================================================
 186
 187         /**
 188          * Get user name.
 189          *
 190          * @return user name
 191          */
 192         public String getUsername() {
 193                 return _username;
 194         }
 195
 196         /**
 197          * Get user password.
 198          *
 199          * @return user password
 200          */
 201         public String getPassword() {
 202                 return _password;
 203         }
 204
 205         /**
 206          * Set user name.
 207          *
 208          * @param value
 209          *            user name
 210          */
 211         public void setUsername(final String value) {
 212                 this._username = value;
 213         }
 214
 215         /**
 216          * Set user password.
 217          *
 218          * @param value
 219          *            the password
 220          */
 221         public void setPassword(final String value) {
 222                 this._password = value;
 223         }
 224
 225         /**
 226          * Set menu for the user.
 227          *
 228          * @param menu
 229          *            menu key string
 230          */
 231         public void setBackMenu(final String menu) {
 232                 this._backmenu = menu;
 233         }
 234
 235         /**
 236          * Get the menuProperty.
 237          *
 238          * @return the menuProperty
 239          */
 240         public String getMenuProperty() {
 241                 return _menuProperty;
 242         }
 243
 244         /**
 245          * Set the menuProperty.
 246          *
 247          * @param menuProperty
 248          *            the menuProperty to set
 249          */
 250         public void setMenuProperty(final String menuProperty) {
 251                 this._menuProperty = menuProperty;
 252         }
 253 }