org.jboss.arquillian.graphene.configuration.SecurityActions Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc. and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.arquillian.graphene.configuration;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;
/**
* SecurityActions
*
* A set of privileged actions that are not to leak out of this package
*
*
* @author Karel Piwko
*/
final class SecurityActions {
// -------------------------------------------------------------------------------||
// Constructor
// ------------------------------------------------------------------||
// -------------------------------------------------------------------------------||
/**
* No instantiation
*/
private SecurityActions() {
throw new UnsupportedOperationException("No instantiation");
}
// -------------------------------------------------------------------------------||
// Utility Methods
// --------------------------------------------------------------||
// -------------------------------------------------------------------------------||
static Map getAccessableFields(final Class source) {
Map declaredAccessableFields = AccessController.doPrivileged(new PrivilegedAction>() {
public Map run() {
Map foundFields = new LinkedHashMap();
for (Field field : source.getDeclaredFields()) {
// omit final fields
if (Modifier.isFinal(field.getModifiers())) {
continue;
}
if (!field.isAccessible()) {
field.setAccessible(true);
}
foundFields.put(field.getName(), field);
}
return foundFields;
}
});
return declaredAccessableFields;
}
static Map getProperties(final String prefix) {
try {
Map value = AccessController.doPrivileged(new PrivilegedExceptionAction>() {
public Map run() {
Properties props = System.getProperties();
Map subset = new LinkedHashMap();
for (Map.Entry entry : props.entrySet()) {
String name = entry.getKey().toString();
if (name.startsWith(prefix)) {
subset.put(name, entry.getValue().toString());
}
}
return subset;
}
});
return value;
}
// Unwrap
catch (final PrivilegedActionException pae) {
final Throwable t = pae.getCause();
// Rethrow
if (t instanceof SecurityException) {
throw (SecurityException) t;
}
if (t instanceof NullPointerException) {
throw (NullPointerException) t;
} else if (t instanceof IllegalArgumentException) {
throw (IllegalArgumentException) t;
} else {
// No other checked Exception thrown by System.getProperty
try {
throw (RuntimeException) t;
}
// Just in case we've really messed up
catch (final ClassCastException cce) {
throw new RuntimeException("Obtained unchecked Exception; this code should never be reached", t);
}
}
}
}
static String getProperty(final String key) {
try {
String value = AccessController.doPrivileged(new PrivilegedExceptionAction() {
public String run() {
return System.getProperty(key);
}
});
return value;
}
// Unwrap
catch (final PrivilegedActionException pae) {
final Throwable t = pae.getCause();
// Rethrow
if (t instanceof SecurityException) {
throw (SecurityException) t;
}
if (t instanceof NullPointerException) {
throw (NullPointerException) t;
} else if (t instanceof IllegalArgumentException) {
throw (IllegalArgumentException) t;
} else {
// No other checked Exception thrown by System.getProperty
try {
throw (RuntimeException) t;
}
// Just in case we've really messed up
catch (final ClassCastException cce) {
throw new RuntimeException("Obtained unchecked Exception; this code should never be reached", t);
}
}
}
}
}