| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.directory.server.core.authz.support; |
| |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import javax.naming.NamingException; |
| |
| import org.apache.directory.server.core.entry.ServerEntry; |
| import org.apache.directory.server.core.partition.PartitionNexusProxy; |
| import org.apache.directory.server.core.subtree.SubtreeEvaluator; |
| import org.apache.directory.server.schema.registries.Registries; |
| import org.apache.directory.shared.ldap.aci.ACITuple; |
| import org.apache.directory.shared.ldap.aci.MicroOperation; |
| import org.apache.directory.shared.ldap.aci.UserClass; |
| import org.apache.directory.shared.ldap.constants.AuthenticationLevel; |
| import org.apache.directory.shared.ldap.entry.Value; |
| import org.apache.directory.shared.ldap.name.LdapDN; |
| import org.apache.directory.shared.ldap.subtree.SubtreeSpecification; |
| |
| |
| /** |
| * An {@link ACITupleFilter} that discards all tuples whose {@link UserClass}es |
| * are not related with the current user. (18.8.3.1, X.501) |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$, $Date$ |
| */ |
| public class RelatedUserClassFilter implements ACITupleFilter |
| { |
| private static final LdapDN ROOTDSE_NAME = LdapDN.EMPTY_LDAPDN; |
| |
| private final SubtreeEvaluator subtreeEvaluator; |
| |
| |
| public RelatedUserClassFilter(SubtreeEvaluator subtreeEvaluator) |
| { |
| this.subtreeEvaluator = subtreeEvaluator; |
| } |
| |
| |
| public Collection<ACITuple> filter( |
| Registries registries, |
| Collection<ACITuple> tuples, |
| OperationScope scope, |
| PartitionNexusProxy proxy, |
| Collection<LdapDN> userGroupNames, |
| LdapDN userName, |
| ServerEntry userEntry, |
| AuthenticationLevel authenticationLevel, |
| LdapDN entryName, |
| String attrId, |
| Value<?> attrValue, |
| ServerEntry entry, |
| Collection<MicroOperation> microOperations, |
| ServerEntry entryView ) |
| throws NamingException |
| { |
| if ( tuples.size() == 0 ) |
| { |
| return tuples; |
| } |
| |
| for ( Iterator<ACITuple> ii = tuples.iterator(); ii.hasNext(); ) |
| { |
| ACITuple tuple = ii.next(); |
| |
| if ( tuple.isGrant() ) |
| { |
| if ( !isRelated( userGroupNames, |
| userName, |
| userEntry, |
| entryName, |
| tuple.getUserClasses() ) |
| || authenticationLevel.compareTo( tuple.getAuthenticationLevel() ) < 0 ) |
| { |
| ii.remove(); |
| } |
| } |
| else |
| // Denials |
| { |
| if ( !isRelated( userGroupNames, |
| userName, |
| userEntry, |
| entryName, |
| tuple.getUserClasses() ) |
| && authenticationLevel.compareTo( tuple.getAuthenticationLevel() ) >= 0 ) |
| { |
| ii.remove(); |
| } |
| } |
| } |
| |
| return tuples; |
| } |
| |
| |
| private boolean isRelated( Collection<LdapDN> userGroupNames, LdapDN userName, ServerEntry userEntry, |
| LdapDN entryName, Collection<UserClass> userClasses ) throws NamingException |
| { |
| for ( UserClass userClass : userClasses ) |
| { |
| if ( userClass == UserClass.ALL_USERS ) |
| { |
| return true; |
| } |
| else if ( userClass == UserClass.THIS_ENTRY ) |
| { |
| if ( userName.equals( entryName ) ) |
| { |
| return true; |
| } |
| } |
| else if ( userClass instanceof UserClass.Name ) |
| { |
| UserClass.Name nameUserClass = ( UserClass.Name ) userClass; |
| if ( nameUserClass.getNames().contains( userName ) ) |
| { |
| return true; |
| } |
| } |
| else if ( userClass instanceof UserClass.UserGroup ) |
| { |
| UserClass.UserGroup userGroupUserClass = ( UserClass.UserGroup ) userClass; |
| |
| for ( LdapDN userGroupName : userGroupNames ) |
| { |
| if ( userGroupName != null && userGroupUserClass.getNames().contains( userGroupName ) ) |
| { |
| return true; |
| } |
| } |
| } |
| else if ( userClass instanceof UserClass.Subtree ) |
| { |
| UserClass.Subtree subtree = ( UserClass.Subtree ) userClass; |
| if ( matchUserClassSubtree( userName, userEntry, subtree ) ) |
| { |
| return true; |
| } |
| } |
| else |
| { |
| throw new InternalError( "Unexpected userClass: " + userClass.getClass().getName() ); |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| private boolean matchUserClassSubtree( LdapDN userName, ServerEntry userEntry, UserClass.Subtree subtree ) |
| throws NamingException |
| { |
| for ( SubtreeSpecification subtreeSpec : subtree.getSubtreeSpecifications() ) |
| { |
| if ( subtreeEvaluator.evaluate( subtreeSpec, ROOTDSE_NAME, userName, userEntry ) ) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| } |