001 /*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied. See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 *
019 */
020 package org.apache.directory.server.core.authz.support;
021
022
023 import java.util.Collection;
024 import java.util.Iterator;
025
026 import javax.naming.NamingException;
027
028 import org.apache.directory.server.core.interceptor.context.OperationContext;
029 import org.apache.directory.shared.ldap.aci.ACITuple;
030 import org.apache.directory.shared.ldap.aci.MicroOperation;
031 import org.apache.directory.shared.ldap.aci.ProtectedItem;
032 import org.apache.directory.shared.ldap.aci.ProtectedItem.RestrictedByItem;
033 import org.apache.directory.shared.ldap.constants.AuthenticationLevel;
034 import org.apache.directory.shared.ldap.entry.EntryAttribute;
035 import org.apache.directory.shared.ldap.entry.ServerEntry;
036 import org.apache.directory.shared.ldap.entry.Value;
037 import org.apache.directory.shared.ldap.name.DN;
038 import org.apache.directory.shared.ldap.schema.SchemaManager;
039
040
041 /**
042 * An {@link ACITupleFilter} that discards all tuples that doesn't satisfy
043 * {@link org.apache.directory.shared.ldap.aci.ProtectedItem.RestrictedBy} constraint if available. (18.8.3.3, X.501)
044 *
045 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
046 * @version $Rev: 927146 $, $Date: 2010-03-24 20:39:54 +0200 (Wed, 24 Mar 2010) $
047 */
048 public class RestrictedByFilter implements ACITupleFilter
049 {
050 public Collection<ACITuple> filter(
051 SchemaManager schemaManager,
052 Collection<ACITuple> tuples,
053 OperationScope scope,
054 OperationContext opContext,
055 Collection<DN> userGroupNames,
056 DN userName,
057 ServerEntry userEntry,
058 AuthenticationLevel authenticationLevel,
059 DN entryName,
060 String attrId,
061 Value<?> attrValue,
062 ServerEntry entry,
063 Collection<MicroOperation> microOperations,
064 ServerEntry entryView )
065 throws NamingException
066 {
067 if ( scope != OperationScope.ATTRIBUTE_TYPE_AND_VALUE )
068 {
069 return tuples;
070 }
071
072 if ( tuples.size() == 0 )
073 {
074 return tuples;
075 }
076
077 for ( Iterator<ACITuple> ii = tuples.iterator() ; ii.hasNext(); )
078 {
079 ACITuple tuple = ii.next();
080
081 if ( !tuple.isGrant() )
082 {
083 continue;
084 }
085
086 if ( isRemovable( tuple, attrId, attrValue, entry ) )
087 {
088 ii.remove();
089 }
090 }
091
092 return tuples;
093 }
094
095
096 public boolean isRemovable( ACITuple tuple, String attrId, Value<?> attrValue, ServerEntry entry ) throws NamingException
097 {
098 for ( ProtectedItem item : tuple.getProtectedItems() )
099 {
100 if ( item instanceof ProtectedItem.RestrictedBy )
101 {
102 ProtectedItem.RestrictedBy rb = ( ProtectedItem.RestrictedBy ) item;
103
104 for ( Iterator<RestrictedByItem> k = rb.iterator(); k.hasNext(); )
105 {
106 RestrictedByItem rbItem = k.next();
107
108 // TODO Fix DIRSEVER-832
109 if ( attrId.equalsIgnoreCase( rbItem.getAttributeType() ) )
110 {
111 EntryAttribute attr = entry.get( rbItem.getValuesIn() );
112
113 // TODO Fix DIRSEVER-832
114 if ( ( attr == null ) || !attr.contains( attrValue ) )
115 {
116 return true;
117 }
118 }
119 }
120 }
121 }
122
123 return false;
124 }
125 }