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* and Distribution License("CDDL") (collectively, the "License"). You
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* file and include the License file at LICENSE.txt.
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* file that accompanied this code.
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*/
package javax.activation;
import java.security.*;
import java.net.*;
import java.io.*;
import java.util.*;
/**
* Security related methods that only work on J2SE 1.2 and newer.
*/
class
SecuritySupport {
private
SecuritySupport() {
// private constructor, can't create an instance
}
public static
ClassLoader getContextClassLoader() {
return (
ClassLoader)
AccessController.
doPrivileged(new
PrivilegedAction() {
public
Object run() {
ClassLoader cl = null;
try {
cl =
Thread.
currentThread().
getContextClassLoader();
} catch (
SecurityException ex) { }
return
cl;
}
});
}
public static
InputStream getResourceAsStream(final
Class c,
final
String name) throws
IOException {
try {
return (
InputStream)
AccessController.
doPrivileged(new
PrivilegedExceptionAction() {
public
Object run() throws
IOException {
return
c.
getResourceAsStream(
name);
}
});
} catch (
PrivilegedActionException e) {
throw (
IOException)
e.
getException();
}
}
public static
URL[]
getResources(final
ClassLoader cl, final
String name) {
return (
URL[])
AccessController.
doPrivileged(new
PrivilegedAction() {
public
Object run() {
URL[]
ret = null;
try {
List v = new
ArrayList();
Enumeration e =
cl.
getResources(
name);
while (
e != null &&
e.
hasMoreElements()) {
URL url = (
URL)
e.
nextElement();
if (
url != null)
v.
add(
url);
}
if (
v.
size() > 0) {
ret = new
URL[
v.
size()];
ret = (
URL[])
v.
toArray(
ret);
}
} catch (
IOException ioex) {
} catch (
SecurityException ex) { }
return
ret;
}
});
}
public static
URL[]
getSystemResources(final
String name) {
return (
URL[])
AccessController.
doPrivileged(new
PrivilegedAction() {
public
Object run() {
URL[]
ret = null;
try {
List v = new
ArrayList();
Enumeration e =
ClassLoader.
getSystemResources(
name);
while (
e != null &&
e.
hasMoreElements()) {
URL url = (
URL)
e.
nextElement();
if (
url != null)
v.
add(
url);
}
if (
v.
size() > 0) {
ret = new
URL[
v.
size()];
ret = (
URL[])
v.
toArray(
ret);
}
} catch (
IOException ioex) {
} catch (
SecurityException ex) { }
return
ret;
}
});
}
public static
InputStream openStream(final
URL url) throws
IOException {
try {
return (
InputStream)
AccessController.
doPrivileged(new
PrivilegedExceptionAction() {
public
Object run() throws
IOException {
return
url.
openStream();
}
});
} catch (
PrivilegedActionException e) {
throw (
IOException)
e.
getException();
}
}
}