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1
28 package net.sf.jguard.core.authorization.policy;
29
30 import java.security.AccessControlException  ;
31 import java.security.AccessController ;
32 import java.security.Permission ;
33 import java.security.Policy ;
34 import java.security.PrivilegedActionException ;
35 import java.security.PrivilegedExceptionAction ;
36 import java.util.logging.Level ;
37 import java.util.logging.Logger ;
38
39 import javax.security.auth.Subject ;
40
41
42
43
50 public class AccessControllerUtils {
51 private static final Logger logger = Logger.getLogger(AccessControllerUtils.class.getName());
52 private LocalAccessController accessController = null;
53
54 public AccessControllerUtils(){
55
56 }
57
58 public AccessControllerUtils(Policy policy){
59 if(policy == null){
60 throw new IllegalArgumentException (" policy is null ");
61 }
62 if(accessController == null){
63 accessController = new LocalAccessController(policy) ;
64 }
65 }
66
67
76 public void checkPermission(Subject subj, final Permission p) throws AccessControlException ,PrivilegedActionException {
77
78 try {
79 Subject.doAsPrivileged(subj, new PrivilegedExceptionAction () {
80 public Object run() {
81 if(accessController == null){
82 AccessController.checkPermission(p);
83 }else{
84 accessController.checkPermission(p);
85 }
86 return null;
90 }
91 },null);
92
93 } catch (AccessControlException ace) {
94 if(logger.isLoggable(Level.FINEST)){
95 logger.log(Level.FINEST,"AccessControlException ",ace);
96 }
97 throw ace;
98 }
99 }
100
101
105 public LocalAccessController getAccessController() {
106 return accessController;
107 }
108
109 }
110 |
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