|
1 package com.tirsen.nanning.samples.prevayler;
2
3 import java.util.HashSet  ;
4 import java.util.Set ;
5 import java.security.AccessController ;
6 import java.security.PrivilegedExceptionAction ;
7 import java.security.PrivilegedActionException ;
8 import java.io.Serializable ;
9
10 import javax.security.auth.Subject ;
11
12 import com.tirsen.nanning.Invocation;
13 import org.apache.commons.collections.CollectionUtils;
14 import org.apache.commons.collections.Predicate;
15
16 public class AuthenticatedCall extends Call {
17 static final long serialVersionUID = 8405907347881334801L;
18
19 protected Set principals;
20 protected Set privateCredentials;
21 protected Set publicCredentials;
22
23 private static final Predicate isSerializable = new Predicate() {
24 public boolean evaluate(Object o) {
25 return o instanceof Serializable ;
26 }
27 };
28
29 public AuthenticatedCall() {
30 Subject subject = Subject.getSubject(AccessController.getContext());
31 if (subject != null) {
32 principals = new HashSet (subject.getPrincipals());
33 CollectionUtils.filter(principals, isSerializable);
34 privateCredentials = new HashSet (subject.getPrivateCredentials());
35 CollectionUtils.filter(privateCredentials, isSerializable);
36 publicCredentials = new HashSet (subject.getPublicCredentials());
37 CollectionUtils.filter(publicCredentials, isSerializable);
38 }
39 }
40
41 public AuthenticatedCall(Invocation invocation) throws Exception {
42 this();
43 setInvocation(invocation);
44 }
45
46 public Subject getSubject() {
47 if (principals == null && publicCredentials == null && privateCredentials == null) {
48 return null;
49 } else {
50 return new Subject (false, principals == null ? new HashSet () : principals, publicCredentials == null ? new HashSet () : publicCredentials, privateCredentials == null ? new HashSet () : privateCredentials);
51 }
52 }
53
54 public Object invoke() throws Exception {
55 try {
56 return Subject.doAs(getSubject(), new PrivilegedExceptionAction () {
57 public Object run() throws Exception {
58 return AuthenticatedCall.super.invoke();
59 }
60 });
61 } catch (PrivilegedActionException e) {
62 throw e.getException();
63 }
64 }
65 }
66 |
Popular Tags |
Java API By Example, From Geeks To Geeks.