org.picketlink.identity.federation.web.config.SecurityActions Maven / Gradle / Ivy
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PicketLink Federation Core contains the core infrastructure code
/*
* JBoss, Home of Professional Open Source
*
* Copyright 2013 Red Hat, Inc. and/or its affiliates.
*
* 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 org.picketlink.identity.federation.web.config;
import java.io.InputStream;
import java.security.AccessController;
import java.security.PrivilegedAction;
/**
* Privileged Blocks
*
* @author [email protected]
* @since Dec 9, 2008
*/
class SecurityActions {
/**
*
* Loads a {@link Class} using the fullQualifiedName supplied. This method tries first to load from
* the
* specified {@link Class}, if not found it will try to load from using TCL.
*
*
* @param theClass
* @param fullQualifiedName
*
* @return
*/
static Class loadClass(final Class theClass, final String fullQualifiedName) {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
return AccessController.doPrivileged(new PrivilegedAction>() {
public Class run() {
ClassLoader classLoader = theClass.getClassLoader();
Class clazz = loadClass(classLoader, fullQualifiedName);
if (clazz == null) {
classLoader = Thread.currentThread().getContextClassLoader();
clazz = loadClass(classLoader, fullQualifiedName);
}
return clazz;
}
});
} else {
ClassLoader classLoader = theClass.getClassLoader();
Class clazz = loadClass(classLoader, fullQualifiedName);
if (clazz == null) {
classLoader = Thread.currentThread().getContextClassLoader();
clazz = loadClass(classLoader, fullQualifiedName);
}
return clazz;
}
}
/**
*
* Loads a class from the specified {@link ClassLoader} using the fullQualifiedName supplied.
*
*
* @param classLoader
* @param fullQualifiedName
*
* @return
*/
static Class loadClass(final ClassLoader classLoader, final String fullQualifiedName) {
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
return AccessController.doPrivileged(new PrivilegedAction>() {
public Class run() {
try {
return classLoader.loadClass(fullQualifiedName);
} catch (ClassNotFoundException e) {
}
return null;
}
});
} else {
try {
return classLoader.loadClass(fullQualifiedName);
} catch (ClassNotFoundException e) {
}
return null;
}
}
static InputStream loadStream(final Class theClass, final String fqn) {
if (System.getSecurityManager() != null) {
return AccessController.doPrivileged(new PrivilegedAction() {
public InputStream run() {
ClassLoader classLoader = theClass.getClassLoader();
InputStream is = classLoader.getResourceAsStream(fqn);
if (is == null) {
is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fqn);
}
return is;
}
});
} else {
ClassLoader classLoader = theClass.getClassLoader();
InputStream is = classLoader.getResourceAsStream(fqn);
if (is == null) {
is = Thread.currentThread().getContextClassLoader().getResourceAsStream(fqn);
}
return is;
}
}
}