/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.as.web.security;
import java.security.AccessController;
import java.security.PrivilegedAction;
import org.jboss.security.RunAs;
import org.jboss.security.RunAsIdentity;
import org.jboss.security.SecurityContext;
import org.jboss.security.SecurityContextAssociation;
import org.jboss.security.SecurityContextFactory;
/**
* Privileged Actions
*
* @author Anil.Saldhana@redhat.com
* @since Jan 12, 2011
*/
class SecurityActions {
/**
* Get the Thread Context Class Loader
*
* @return
*/
static ClassLoader getContextClassLoader() {
return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
@Override
public ClassLoader run() {
return Thread.currentThread().getContextClassLoader();
}
});
}
/**
* Set the Thread Context {@code ClassLoader}
*
* @param cl An instance of {@code ClassLoader}
*/
static void setContextClassLoader(final ClassLoader cl) {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override
public Void run() {
Thread.currentThread().setContextClassLoader(cl);
return null;
}
});
}
/**
* Get the Class {@code ClassLoader}
*
* @param clazz A class whose classloader is needed
* @return The Classloader of the clazz
*/
static ClassLoader getClassLoader(final Class<?> clazz) {
return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
@Override
public ClassLoader run() {
return clazz.getClassLoader();
}
});
}
/**
* Create a JBoss Security Context with the given security domain name
*
* @param domain the security domain name (such as "other" )
* @return an instanceof {@code SecurityContext}
*/
static SecurityContext createSecurityContext(final String domain) {
return AccessController.doPrivileged(new PrivilegedAction<SecurityContext>() {
@Override
public SecurityContext run() {
try {
return SecurityContextFactory.createSecurityContext(domain);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
});
}
/**
* Set the {@code SecurityContext} on the {@code SecurityContextAssociation}
*
* @param sc the security context
*/
static void setSecurityContextOnAssociation(final SecurityContext sc) {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override
public Void run() {
SecurityContextAssociation.setSecurityContext(sc);
return null;
}
});
}
/**
* Get the current {@code SecurityContext}
*
* @return an instance of {@code SecurityContext}
*/
static SecurityContext getSecurityContext() {
return AccessController.doPrivileged(new PrivilegedAction<SecurityContext>() {
public SecurityContext run() {
return SecurityContextAssociation.getSecurityContext();
}
});
}
/**
* Clears current {@code SecurityContext}
*/
static void clearSecurityContext() {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
public Void run() {
SecurityContextAssociation.clearSecurityContext();
return null;
}
});
}
/**
* Sets the run as identity
*
* @param principal the identity
*/
static void pushRunAsIdentity(final RunAsIdentity principal) {
AccessController.doPrivileged(new PrivilegedAction<Void>() {
@Override
public Void run() {
SecurityContext sc = getSecurityContext();
if (sc == null)
throw new IllegalStateException("SecurityContext is null");
sc.setOutgoingRunAs(principal);
return null;
}
});
}
/**
* Removes the run as identity
* @return the identity removed
*/
static RunAs popRunAsIdentity() {
return AccessController.doPrivileged(new PrivilegedAction<RunAs>() {
@Override
public RunAs run() {
SecurityContext sc = getSecurityContext();
if (sc == null)
throw new IllegalStateException("SecurityContext is null");
RunAs principal = sc.getOutgoingRunAs();
sc.setOutgoingRunAs(null);
return principal;
}
});
}
}