org.argeo.security.ui.admin/src/org/argeo/security/ui/admin/internal/UiAdminUtils.java

   1 package org.argeo.security.ui.admin.internal;
   2
   3 import java.security.AccessController;
   4
   5 import javax.naming.InvalidNameException;
   6 import javax.naming.ldap.LdapName;
   7 import javax.security.auth.Subject;
   8 import javax.security.auth.x500.X500Principal;
   9 import javax.transaction.Status;
  10 import javax.transaction.UserTransaction;
  11
  12 import org.argeo.ArgeoException;
  13 import org.eclipse.ui.IWorkbenchWindow;
  14 import org.eclipse.ui.PlatformUI;
  15 import org.eclipse.ui.services.ISourceProviderService;
  16 import org.osgi.service.useradmin.Role;
  17 import org.osgi.service.useradmin.User;
  18 import org.osgi.service.useradmin.UserAdmin;
  19
  20 /** First effort to centralize back end methods used by the user admin UI */
  21 public class UiAdminUtils {
  22
  23         /** returns the local name of the current connected user */
  24         public final static String getUsername(UserAdmin userAdmin) {
  25                 LdapName dn = getLdapName();
  26                 return getUsername(getUser(userAdmin, dn));
  27         }
  28
  29         public final static boolean isCurrentUser(User user) {
  30                 String userName = UiAdminUtils.getProperty(user,
  31                                 UserAdminConstants.KEY_DN);
  32                 try {
  33                         LdapName selfUserName = UiAdminUtils.getLdapName();
  34                         LdapName userLdapName = new LdapName(userName);
  35                         if (userLdapName.equals(selfUserName))
  36                                 return true;
  37                         else
  38                                 return false;
  39                 } catch (InvalidNameException e) {
  40                         throw new ArgeoException("User " + user + " has an unvalid dn: "
  41                                         + userName, e);
  42                 }
  43         }
  44
  45         public final static LdapName getLdapName() {
  46                 Subject subject = Subject.getSubject(AccessController.getContext());
  47                 String name = subject.getPrincipals(X500Principal.class).iterator()
  48                                 .next().toString();
  49                 LdapName dn;
  50                 try {
  51                         dn = new LdapName(name);
  52                 } catch (InvalidNameException e) {
  53                         throw new ArgeoException("Invalid user dn " + name, e);
  54                 }
  55                 return dn;
  56         }
  57
  58         public final static User getUser(UserAdmin userAdmin, LdapName dn) {
  59                 User user = userAdmin.getUser(UserAdminConstants.KEY_DN, dn.toString());
  60                 return user;
  61         }
  62
  63         public final static String getUsername(User user) {
  64                 String cn = getProperty(user, UserAdminConstants.KEY_CN);
  65                 if (isEmpty(cn))
  66                         cn = getProperty(user, UserAdminConstants.KEY_UID);
  67                 return cn;
  68         }
  69
  70         public final static String getProperty(Role role, String key) {
  71                 Object obj = role.getProperties().get(key);
  72                 if (obj != null)
  73                         return (String) obj;
  74                 else
  75                         return "";
  76         }
  77
  78         public final static String getDefaultCn(String firstName, String lastName) {
  79                 return (firstName.trim() + " " + lastName.trim() + " ").trim();
  80         }
  81
  82         /*
  83          * INTERNAL METHODS: Below methods are meant to stay here and are not part
  84          * of a potential generic backend to manage the useradmin
  85          */
  86         public final static boolean notNull(String string) {
  87                 if (string == null)
  88                         return false;
  89                 else
  90                         return !"".equals(string.trim());
  91         }
  92
  93         public final static boolean isEmpty(String string) {
  94                 if (string == null)
  95                         return true;
  96                 else
  97                         return "".equals(string.trim());
  98         }
  99
 100         /** Must be called from the UI Thread. */
 101         public final static void beginTransactionIfNeeded(
 102                         UserTransaction userTransaction) {
 103                 try {
 104                         if (userTransaction.getStatus() == Status.STATUS_NO_TRANSACTION) {
 105                                 userTransaction.begin();
 106                                 notifyTransactionStateChange(userTransaction);
 107                         }
 108                 } catch (Exception e) {
 109                         throw new ArgeoException("Unable to begin transaction", e);
 110                 }
 111         }
 112
 113         /** Easily notify the ActiveWindow that the transaction had a state change */
 114         public final static void notifyTransactionStateChange(
 115                         UserTransaction userTransaction) {
 116                 try {
 117                         IWorkbenchWindow aww = PlatformUI.getWorkbench()
 118                                         .getActiveWorkbenchWindow();
 119                         ISourceProviderService sourceProviderService = (ISourceProviderService) aww
 120                                         .getService(ISourceProviderService.class);
 121                         UserTransactionProvider esp = (UserTransactionProvider) sourceProviderService
 122                                         .getSourceProvider(UserTransactionProvider.TRANSACTION_STATE);
 123                         esp.fireTransactionStateChange();
 124                 } catch (Exception e) {
 125                         throw new ArgeoException("Unable to begin transaction", e);
 126                 }
 127         }
 128 }