| /* |
| * 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.directory.SearchControls; |
| |
| import org.apache.directory.api.ldap.aci.ACITuple; |
| import org.apache.directory.api.ldap.aci.ProtectedItem; |
| import org.apache.directory.api.ldap.aci.protectedItem.MaxImmSubItem; |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| 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.exception.LdapOperationException; |
| import org.apache.directory.api.ldap.model.exception.LdapOtherException; |
| import org.apache.directory.api.ldap.model.filter.ExprNode; |
| import org.apache.directory.api.ldap.model.filter.PresenceNode; |
| import org.apache.directory.api.ldap.model.message.AliasDerefMode; |
| import org.apache.directory.api.ldap.model.name.Dn; |
| import org.apache.directory.api.ldap.model.schema.AttributeType; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.server.core.api.filtering.EntryFilteringCursor; |
| import org.apache.directory.server.core.api.interceptor.context.OperationContext; |
| import org.apache.directory.server.core.api.interceptor.context.SearchOperationContext; |
| |
| |
| /** |
| * An {@link ACITupleFilter} that discards all tuples that doesn't satisfy |
| * {@link org.apache.directory.api.ldap.aci.protectedItem.MaxImmSubItem} constraint if available. (18.8.3.3, X.501) |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class MaxImmSubFilter implements ACITupleFilter |
| { |
| private final ExprNode childrenFilter; |
| private final SearchControls childrenSearchControls; |
| |
| |
| public MaxImmSubFilter( SchemaManager schemaManager ) |
| { |
| AttributeType objectClassAt = null; |
| |
| try |
| { |
| objectClassAt = schemaManager.lookupAttributeTypeRegistry( SchemaConstants.OBJECT_CLASS_AT ); |
| } |
| catch ( LdapException le ) |
| { |
| // Do nothing |
| } |
| |
| childrenFilter = new PresenceNode( objectClassAt ); |
| childrenSearchControls = new SearchControls(); |
| childrenSearchControls.setSearchScope( SearchControls.ONELEVEL_SCOPE ); |
| } |
| |
| |
| public Collection<ACITuple> filter( AciContext aciContext, OperationScope scope, Entry userEntry ) |
| throws LdapException |
| { |
| ACI_LOG.debug( "Filtering MaxImmSub..." ); |
| |
| if ( aciContext.getEntryDn().isRootDse() ) |
| { |
| return aciContext.getAciTuples(); |
| } |
| |
| if ( aciContext.getAciTuples().size() == 0 ) |
| { |
| return aciContext.getAciTuples(); |
| } |
| |
| if ( scope != OperationScope.ENTRY ) |
| { |
| return aciContext.getAciTuples(); |
| } |
| |
| int immSubCount = -1; |
| |
| for ( Iterator<ACITuple> i = aciContext.getAciTuples().iterator(); i.hasNext(); ) |
| { |
| ACITuple tuple = i.next(); |
| |
| if ( !tuple.isGrant() ) |
| { |
| continue; |
| } |
| |
| for ( ProtectedItem item : tuple.getProtectedItems() ) |
| { |
| if ( item instanceof MaxImmSubItem ) |
| { |
| if ( immSubCount < 0 ) |
| { |
| immSubCount = getImmSubCount( aciContext.getOperationContext(), aciContext.getEntryDn() ); |
| } |
| |
| MaxImmSubItem mis = ( MaxImmSubItem ) item; |
| |
| if ( immSubCount >= mis.getValue() ) |
| { |
| i.remove(); |
| break; |
| } |
| } |
| } |
| } |
| |
| return aciContext.getAciTuples(); |
| } |
| |
| |
| private int getImmSubCount( OperationContext opContext, Dn entryName ) throws LdapException |
| { |
| int cnt = 0; |
| EntryFilteringCursor results = null; |
| |
| try |
| { |
| Dn baseDn = new Dn( opContext.getSession().getDirectoryService().getSchemaManager(), |
| entryName.getRdn( entryName.size() - 1 ) ); |
| SearchOperationContext searchContext = new SearchOperationContext( opContext.getSession(), |
| baseDn, childrenFilter, childrenSearchControls ); |
| searchContext.setAliasDerefMode( AliasDerefMode.DEREF_ALWAYS ); |
| |
| results = opContext.getSession().getDirectoryService().getPartitionNexus().search( searchContext ); |
| |
| try |
| { |
| while ( results.next() ) |
| { |
| results.get(); |
| cnt++; |
| } |
| } |
| catch ( Exception e ) |
| { |
| throw new LdapOtherException( e.getMessage(), e ); |
| } |
| } |
| finally |
| { |
| if ( results != null ) |
| { |
| try |
| { |
| results.close(); |
| } |
| catch ( Exception e ) |
| { |
| throw new LdapOperationException( e.getMessage(), e ); |
| } |
| } |
| } |
| |
| return cnt; |
| } |
| } |