| /* |
| * 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 java.util.Set; |
| |
| import org.apache.directory.api.ldap.aci.ACITuple; |
| import org.apache.directory.api.ldap.aci.UserClass; |
| import org.apache.directory.api.ldap.model.entry.Entry; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.subtree.SubtreeSpecification; |
| import org.apache.directory.server.core.api.subtree.SubtreeEvaluator; |
| import org.apache.directory.server.i18n.I18n; |
| |
| |
| /** |
| * 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> |
| */ |
| public class RelatedUserClassFilter implements ACITupleFilter |
| { |
| private final SubtreeEvaluator subtreeEvaluator; |
| |
| |
| public RelatedUserClassFilter( SubtreeEvaluator subtreeEvaluator ) |
| { |
| this.subtreeEvaluator = subtreeEvaluator; |
| } |
| |
| |
| public Collection<ACITuple> filter( AciContext aciContext, OperationScope scope, Entry userEntry ) |
| throws LdapException |
| { |
| if ( aciContext.getAciTuples().size() == 0 ) |
| { |
| return aciContext.getAciTuples(); |
| } |
| |
| for ( Iterator<ACITuple> ii = aciContext.getAciTuples().iterator(); ii.hasNext(); ) |
| { |
| ACITuple tuple = ii.next(); |
| |
| if ( tuple.isGrant() ) |
| { |
| if ( !isRelated( aciContext.getUserGroupNames(), |
| aciContext.getUserDn(), |
| userEntry, |
| aciContext.getEntryDn(), |
| tuple.getUserClasses() ) |
| || aciContext.getAuthenticationLevel().compareTo( tuple.getAuthenticationLevel() ) < 0 ) |
| { |
| ii.remove(); |
| } |
| } |
| else |
| // Denials |
| { |
| if ( !isRelated( aciContext.getUserGroupNames(), |
| aciContext.getUserDn(), |
| userEntry, |
| aciContext.getEntryDn(), |
| tuple.getUserClasses() ) |
| && aciContext.getAuthenticationLevel().compareTo( tuple.getAuthenticationLevel() ) >= 0 ) |
| { |
| ii.remove(); |
| } |
| } |
| } |
| |
| return aciContext.getAciTuples(); |
| } |
| |
| |
| private boolean isRelated( Collection<Dn> userGroupNames, Dn userName, Entry userEntry, |
| Dn entryName, Collection<UserClass> userClasses ) throws LdapException |
| { |
| 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 == UserClass.PARENT_OF_ENTRY ) |
| { |
| if ( entryName.isDescendantOf( userName ) ) |
| { |
| 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 ( Dn userGroupName : userGroupNames ) |
| { |
| Set<Dn> dns = userGroupUserClass.getNames(); |
| |
| if ( userGroupName != null ) |
| { |
| for ( Dn dn : dns ) |
| { |
| if ( userGroupName.getNormName().equals( dn.getNormName() ) ) |
| { |
| 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( I18n.err( I18n.ERR_233, userClass.getClass().getName() ) ); |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| private boolean matchUserClassSubtree( Dn userName, Entry userEntry, UserClass.Subtree subtree ) |
| throws LdapException |
| { |
| for ( SubtreeSpecification subtreeSpec : subtree.getSubtreeSpecifications() ) |
| { |
| if ( subtreeEvaluator.evaluate( subtreeSpec, Dn.ROOT_DSE, userName, userEntry ) ) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| } |