|
1
22 package org.jboss.virtual.classloading;
23
24 import java.security.AccessController  ;
25 import java.security.Policy ;
26 import java.security.PrivilegedAction ;
27
28 import org.jboss.virtual.VFS;
29
30
36 class SecurityActions
37 {
38 static PrivilegedAction <Policy > getPolicyAction = new PrivilegedAction <Policy >() {
39 public Policy run()
40 {
41 return Policy.getPolicy();
42 }
43 };
44
45 interface ClassLoaderActions
46 {
47 ClassLoaderActions PRIVILEGED = new ClassLoaderActions() {
48 public VFSClassLoader newClassLoader(final String [] paths,
49 final VFS vfs, final ClassLoader parent)
50 {
51 PrivilegedAction <VFSClassLoader> action = new PrivilegedAction <VFSClassLoader>() {
52 public VFSClassLoader run()
53 {
54 ClassLoader theParent = parent;
55 if (parent == null)
56 theParent = Thread.currentThread().getContextClassLoader();
57 return new VFSClassLoader(paths, vfs, theParent);
58 }
59 };
60 return AccessController.doPrivileged(action);
61 }
62
63 public Policy getPolicy()
64 {
65 return AccessController.doPrivileged(getPolicyAction);
66 }
67 };
68
69 ClassLoaderActions NON_PRIVILEGED = new ClassLoaderActions() {
70 public VFSClassLoader newClassLoader(final String [] paths,
71 final VFS vfs, final ClassLoader parent)
72 {
73 ClassLoader theParent = parent;
74 if (parent == null)
75 theParent = Thread.currentThread().getContextClassLoader();
76 return new VFSClassLoader(paths, vfs, theParent);
77 }
78
79 public Policy getPolicy()
80 {
81 return Policy.getPolicy();
82 }
83 };
84
85 VFSClassLoader newClassLoader(final String [] paths, final VFS vfs, ClassLoader parent);
86
87 Policy getPolicy();
88 }
89
90 static VFSClassLoader newClassLoader(final String [] paths,
91 final VFS vfs)
92 {
93 if (System.getSecurityManager() == null)
94 {
95 return ClassLoaderActions.NON_PRIVILEGED.newClassLoader(paths, vfs, null);
96 }
97 else
98 {
99 return ClassLoaderActions.PRIVILEGED.newClassLoader(paths, vfs, null);
100 }
101 }
102
103 static VFSClassLoader newClassLoader(final String [] paths,
104 final VFS vfs, ClassLoader parent)
105 {
106 if (System.getSecurityManager() == null)
107 {
108 return ClassLoaderActions.NON_PRIVILEGED.newClassLoader(paths, vfs,
109 parent);
110 }
111 else
112 {
113 return ClassLoaderActions.PRIVILEGED
114 .newClassLoader(paths, vfs, parent);
115 }
116 }
117
118 static Policy getPolicy()
119 {
120 if (System.getSecurityManager() == null)
121 {
122 return ClassLoaderActions.NON_PRIVILEGED.getPolicy();
123 }
124 else
125 {
126 return ClassLoaderActions.PRIVILEGED.getPolicy();
127 }
128 }
129
130 }
131 |
Popular Tags |
Java API By Example, From Geeks To Geeks.