org.argeo.security.ui/src/org/argeo/security/ui/internal/CurrentUser.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.security.ui.internal;
  17
  18 import java.util.Collections;
  19 import java.util.HashSet;
  20 import java.util.Set;
  21
  22 import org.springframework.security.core.Authentication;
  23 import org.springframework.security.core.GrantedAuthority;
  24 import org.springframework.security.core.context.SecurityContextHolder;
  25
  26 /**
  27  * Retrieves information about the current user. Not an API, can change without
  28  * notice.
  29  */
  30 public class CurrentUser {
  31         // public final static String getUsername() {
  32         // Subject subject = getSubject();
  33         // if (subject == null)
  34         // return null;
  35         // Principal principal = subject.getPrincipals().iterator().next();
  36         // return principal.getName();
  37         //
  38         // }
  39
  40         public final static String getUsername() {
  41                 return getAuthentication().getName();
  42         }
  43
  44         public final static Set<String> roles() {
  45                 Set<String> roles = Collections.synchronizedSet(new HashSet<String>());
  46                 Authentication authentication = getAuthentication();
  47                 for (GrantedAuthority ga : authentication.getAuthorities()) {
  48                         roles.add(ga.getAuthority());
  49                 }
  50                 return Collections.unmodifiableSet(roles);
  51         }
  52
  53         public final static Authentication getAuthentication() {
  54                 return SecurityContextHolder.getContext().getAuthentication();
  55         }
  56
  57         // public final static Authentication getAuthentication() {
  58         // Set<Authentication> authens = getSubject().getPrincipals(
  59         // Authentication.class);
  60         // if (authens != null && !authens.isEmpty()) {
  61         // Principal principal = authens.iterator().next();
  62         // Authentication authentication = (Authentication) principal;
  63         // return authentication;
  64         // }
  65         // throw new ArgeoException("No authentication found");
  66         // }
  67
  68         // public final static Subject getSubject() {
  69         // Subject subject = Subject.getSubject(AccessController.getContext());
  70         // if (subject == null)
  71         // throw new ArgeoException("Not authenticated.");
  72         // return subject;
  73         // }
  74 }