com.googlecode.html.SecuritySupport12 Maven / Gradle / Ivy
/*
* Copyright 2002-2008 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package com.googlecode.html;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* This class is duplicated for each JAXP subpackage so keep it in sync. It is package private and
* therefore is not exposed as part of the JAXP API.
*
* Security related methods that only work on J2SE 1.2 and newer.
*/
class SecuritySupport12 extends SecuritySupport {
ClassLoader getContextClassLoader() {
return (ClassLoader) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
ClassLoader cl = null;
try {
cl = Thread.currentThread().getContextClassLoader();
} catch (SecurityException ex) {
}
return cl;
}
});
}
boolean getFileExists(final File f) {
return ((Boolean) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return new Boolean(f.exists());
}
})).booleanValue();
}
FileInputStream getFileInputStream(final File file) throws FileNotFoundException {
try {
return (FileInputStream) AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws FileNotFoundException {
return new FileInputStream(file);
}
});
} catch (PrivilegedActionException e) {
throw (FileNotFoundException) e.getException();
}
}
long getLastModified(final File f) {
return ((Long) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return new Long(f.lastModified());
}
})).longValue();
}
ClassLoader getParentClassLoader(final ClassLoader cl) {
return (ClassLoader) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
ClassLoader parent = null;
try {
parent = cl.getParent();
} catch (SecurityException ex) {
}
// eliminate loops in case of the boot
// ClassLoader returning itself as a parent
return (parent == cl) ? null : parent;
}
});
}
InputStream getResourceAsStream(final ClassLoader cl, final String name) {
return (InputStream) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
InputStream ris;
if (cl == null) {
ris = ClassLoader.getSystemResourceAsStream(name);
} else {
ris = cl.getResourceAsStream(name);
}
return ris;
}
});
}
ClassLoader getSystemClassLoader() {
return (ClassLoader) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
ClassLoader cl = null;
try {
cl = ClassLoader.getSystemClassLoader();
} catch (SecurityException ex) {
}
return cl;
}
});
}
String getSystemProperty(final String propName) {
return (String) AccessController.doPrivileged(new PrivilegedAction() {
public Object run() {
return System.getProperty(propName);
}
});
}
}