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/*
 * 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.jboss.security.acl;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
import javax.persistence.Transient;

import org.hibernate.annotations.Cascade;
import org.jboss.security.PicketBoxMessages;
import org.jboss.security.authorization.Resource;
import org.jboss.security.identity.Identity;

/**
 * 

* Simple ACL implementation that keeps the entries in a Map whose keys are the identities of the entries, to provide * fast access. *

* * @author Stefan Guilhen */ @Entity @Table(name = "ACL") public class ACLImpl implements ACL, Serializable { private static final long serialVersionUID = -6390609071167528812L; @Id @GeneratedValue private long aclID; @Transient private Resource resource; @Column(name = "resource") private String resourceAsString; @Transient private Map entriesMap; @OneToMany(mappedBy = "acl", fetch = FetchType.EAGER, cascade = {CascadeType.REMOVE, CascadeType.PERSIST}) @Cascade( {org.hibernate.annotations.CascadeType.DELETE_ORPHAN}) private Collection entries; /** *

* Builds an instance of {@code ACLImpl}. This constructor is required by the JPA specification. *

*/ ACLImpl() { } /** *

* Builds an instance of {@code ACLImpl} for the specified resource. *

* * @param resource a reference to the {@code Resource} associated with the ACL being constructed. */ public ACLImpl(Resource resource) { this(resource, new ArrayList()); } /** *

* Builds an instance of {@code ACLImpl} for the specified resource, and initialize it with the specified entries. *

* * @param resource a reference to the {@code Resource} associated with the ACL being constructed. * @param entries a {@code Collection} containing the ACL's initial entries. */ public ACLImpl(Resource resource, Collection entries) { this(Util.getResourceAsString(resource), entries); this.resource = resource; } public ACLImpl(String resourceString, Collection entries) { this.resourceAsString = resourceString; this.entries = new ArrayList(); if (entries != null) { for (ACLEntry entry : entries) { ACLEntryImpl entryImpl = (ACLEntryImpl) entry; entryImpl.setAcl(this); this.entries.add(entryImpl); } } this.initEntriesMap(); } /** *

* Obtains the persistent id of this {@code ACLImpl}. *

* * @return a {@code long} representing the persistent id this ACL. */ public long getACLId() { return this.aclID; } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#addEntry(org.jboss.security.acl.ACLEntry) */ public boolean addEntry(ACLEntry entry) { if (this.entriesMap == null) this.initEntriesMap(); // don't add a null entry or an entry that already existSELECT * FROM ACL_ENTRYs. if (entry == null || this.entriesMap.get(entry.getIdentityOrRole()) != null) return false; this.entries.add((ACLEntryImpl) entry); ((ACLEntryImpl) entry).setAcl(this); this.entriesMap.put(entry.getIdentityOrRole(), entry); return true; } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#removeEntry(org.jboss.security.acl.ACLEntry) */ public boolean removeEntry(ACLEntry entry) { if (this.entriesMap == null) this.initEntriesMap(); this.entriesMap.remove(entry.getIdentityOrRole()); return this.entries.remove(entry); } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#getEntries() */ public Collection getEntries() { if (this.entriesMap == null) this.initEntriesMap(); return Collections.unmodifiableCollection(this.entries); } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#getEntry(org.jboss.security.identity.Identity) */ public ACLEntry getEntry(Identity identity) { if (this.entriesMap == null) this.initEntriesMap(); return this.entriesMap.get(identity.getName()); } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#getEntry(java.lang.String) */ public ACLEntry getEntry(String identityOrRole) { if (this.entriesMap == null) this.initEntriesMap(); return this.entriesMap.get(identityOrRole); } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#isGranted(org.jboss.security.acl.ACLPermission, * org.jboss.security.identity.Identity) */ public boolean isGranted(ACLPermission permission, Identity identity) { if (this.entriesMap == null) this.initEntriesMap(); // lookup the entry corresponding to the specified identity. ACLEntry entry = this.entriesMap.get(identity.getName()); if (entry != null) { // check the permission associated with the identity. return entry.checkPermission(permission); } return false; } /** *

* Obtains the stringfied representation of the resource associated with this {@code ACL}. *

* * @return a {@code String} representation of the resource. */ public String getResourceAsString() { return this.resourceAsString; } /* * (non-Javadoc) * * @see org.jboss.security.acl.ACL#getResource() */ public Resource getResource() { return this.resource; } /** *

* Sets the resource associated with this {@code ACL}. *

* * @param resource a reference to the {@code Resource} associated with this {@code ACL}. */ public void setResource(Resource resource) { if (this.resource != null) throw PicketBoxMessages.MESSAGES.aclResourceAlreadySet(); this.resource = resource; } /** *

* Initializes the entries map of this {@code ACL} instance. *

*/ private void initEntriesMap() { this.entriesMap = new HashMap(); for (ACLEntry entry : this.entries) this.entriesMap.put(entry.getIdentityOrRole(), entry); } }




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