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1
7
8 package javax.xml.xpath;
9
10 import java.net.URL  ;
11 import java.security.*;
12 import java.net.*;
13 import java.io.*;
14 import java.util.*;
15
16
23 class SecuritySupport {
24
25
26 ClassLoader getContextClassLoader() {
27 return (ClassLoader )
28 AccessController.doPrivileged(new PrivilegedAction() {
29 public Object run() {
30 ClassLoader cl = null;
31 try {
32 cl = Thread.currentThread().getContextClassLoader();
33 } catch (SecurityException ex) { }
34 return cl;
35 }
36 });
37 }
38
39 String getSystemProperty(final String propName) {
40 return (String )
41 AccessController.doPrivileged(new PrivilegedAction() {
42 public Object run() {
43 return System.getProperty(propName);
44 }
45 });
46 }
47
48 FileInputStream getFileInputStream(final File file)
49 throws FileNotFoundException
50 {
51 try {
52 return (FileInputStream)
53 AccessController.doPrivileged(new PrivilegedExceptionAction() {
54 public Object run() throws FileNotFoundException {
55 return new FileInputStream(file);
56 }
57 });
58 } catch (PrivilegedActionException e) {
59 throw (FileNotFoundException)e.getException();
60 }
61 }
62
63 InputStream getURLInputStream(final URL url)
64 throws IOException
65 {
66 try {
67 return (InputStream)
68 AccessController.doPrivileged(new PrivilegedExceptionAction() {
69 public Object run() throws IOException {
70 return url.openStream();
71 }
72 });
73 } catch (PrivilegedActionException e) {
74 throw (IOException)e.getException();
75 }
76 }
77
78 URL getResourceAsURL(final ClassLoader cl,
79 final String name)
80 {
81 return (URL )
82 AccessController.doPrivileged(new PrivilegedAction() {
83 public Object run() {
84 URL url;
85 if (cl == null) {
86 url = ClassLoader.getSystemResource(name);
87 } else {
88 url = cl.getResource(name);
89 }
90 return url;
91 }
92 });
93 }
94
95 Enumeration getResources(final ClassLoader cl,
96 final String name) throws IOException
97 {
98 try{
99 return (Enumeration)
100 AccessController.doPrivileged(new PrivilegedExceptionAction() {
101 public Object run() throws IOException{
102 Enumeration enumeration;
103 if (cl == null) {
104 enumeration = ClassLoader.getSystemResources(name);
105 } else {
106 enumeration = cl.getResources(name);
107 }
108 return enumeration;
109 }
110 });
111 }catch(PrivilegedActionException e){
112 throw (IOException)e.getException();
113 }
114 }
115
116 InputStream getResourceAsStream(final ClassLoader cl,
117 final String name)
118 {
119 return (InputStream)
120 AccessController.doPrivileged(new PrivilegedAction() {
121 public Object run() {
122 InputStream ris;
123 if (cl == null) {
124 ris = ClassLoader.getSystemResourceAsStream(name);
125 } else {
126 ris = cl.getResourceAsStream(name);
127 }
128 return ris;
129 }
130 });
131 }
132
133 boolean doesFileExist(final File f) {
134 return ((Boolean )
135 AccessController.doPrivileged(new PrivilegedAction() {
136 public Object run() {
137 return new Boolean (f.exists());
138 }
139 })).booleanValue();
140 }
141
142 }
143 |
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