security/eclipse/plugins/org.argeo.security.equinox/src/main/java/org/argeo/security/equinox/CurrentUser.java

   1 package org.argeo.security.equinox;
   2
   3 import java.security.Principal;
   4 import java.util.Collections;
   5 import java.util.HashSet;
   6 import java.util.Set;
   7
   8 import javax.security.auth.Subject;
   9
  10 import org.eclipse.equinox.security.auth.ILoginContext;
  11 import org.eclipse.equinox.security.auth.LoginContextFactory;
  12 import org.springframework.security.Authentication;
  13 import org.springframework.security.GrantedAuthority;
  14
  15 public class CurrentUser {
  16         public final static String getUsername() {
  17                 Subject subject = getSubject();
  18                 if (subject == null)
  19                         return null;
  20                 Principal principal = subject.getPrincipals().iterator().next();
  21                 return principal.getName();
  22
  23         }
  24
  25         public final static Set<String> roles() {
  26                 Principal principal = getSubject().getPrincipals().iterator().next();
  27                 Authentication authentication = (Authentication) principal;
  28                 Set<String> roles = Collections.synchronizedSet(new HashSet<String>());
  29                 for (GrantedAuthority ga : authentication.getAuthorities()) {
  30                         roles.add(ga.getAuthority());
  31                 }
  32                 return Collections.unmodifiableSet(roles);
  33         }
  34
  35         private final static ILoginContext getLoginContext() {
  36                 return EquinoxSecurity.getLoginContext();
  37 //              return LoginContextFactory
  38 //                              .createContext(EquinoxSecurity.CONTEXT_SPRING);
  39         }
  40
  41         // private static void login() {
  42         // try {
  43         // getLoginContext().login();
  44         // } catch (LoginException e) {
  45         // throw new RuntimeException("Cannot login", e);
  46         // }
  47         // }
  48
  49         public final static Subject getSubject() {
  50
  51                 Subject subject = null;
  52                 // subject = Subject.getSubject(AccessController.getContext());
  53                 try {
  54                         getLoginContext().login();
  55                         subject = getLoginContext().getSubject();
  56                 } catch (Exception e) {
  57                         throw new RuntimeException("Cannot retrieve subject", e);
  58                 }
  59
  60                 return subject;
  61
  62         }
  63
  64 }