/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* 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.jbpm.identity.security;
import java.security.AllPermission;
import java.security.CodeSource;
import java.security.Permission;
import java.security.PermissionCollection;
import java.security.Permissions;
import java.security.Policy;
import java.security.Principal;
import java.security.ProtectionDomain;
import org.jbpm.identity.Entity;
/**
* a java.security.Policy implementation that in combination with the IdentityLoginModule enforces
* the security permissions modelled as in the package org.jbpm.identity.
*/
public class IdentityPolicy extends Policy {
public static final PermissionCollection ALL_PERMISSIONSCOLLECTION = new Permissions();
static {
ALL_PERMISSIONSCOLLECTION.add(new AllPermission());
ALL_PERMISSIONSCOLLECTION.setReadOnly();
}
public void refresh() {
}
public PermissionCollection getPermissions(CodeSource codesource) {
// no checks are done based on the origin of the code
// checks are only based on *who* is running the code.
return ALL_PERMISSIONSCOLLECTION;
}
public PermissionCollection getPermissions(ProtectionDomain domain) {
PermissionCollection permissionCollection = new Permissions();
Principal[] principals = domain.getPrincipals();
// if there are principals
if (principals != null) {
// loop over the principals
for (Principal principal : principals) {
// if the principal is a org.jbpm.identity.Entity
if (Entity.class.isAssignableFrom(principal.getClass())) {
// add all the identity's permissions to the set of permissions.
Entity entity = (Entity) principal;
for (Permission permission : entity.getPermissions()) {
permissionCollection.add(permission);
}
}
}
}
return super.getPermissions(domain);
}
public boolean implies(ProtectionDomain domain, Permission permission) {
return getPermissions(domain).implies(permission);
}
}