1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20
21 package org.apache.directory.api.ldap.model.ldif.anonymizer;
22
23
24 import java.util.Random;
25
26 import org.apache.directory.api.ldap.model.entry.Attribute;
27 import org.apache.directory.api.ldap.model.entry.BinaryValue;
28 import org.apache.directory.api.ldap.model.entry.DefaultAttribute;
29 import org.apache.directory.api.ldap.model.entry.Value;
30 import org.apache.directory.api.ldap.model.exception.LdapInvalidAttributeValueException;
31
32
33 /**
34 * A default anonymizer for attributes that are not HR
35 *
36 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
37 */
38 public class BinaryAnonymizer implements Anonymizer
39 {
40 /** Create a random generator */
41 Random random = new Random( System.currentTimeMillis() );
42
43
44 /**
45 * Anonymize an attribute using pure random values (either chars of bytes, depending on the Attribute type)
46 */
47 @Override
48 public Attribute anonymize( Attribute attribute )
49 {
50 Attribute result = new DefaultAttribute( attribute.getAttributeType() );
51 random.setSeed( System.nanoTime() );
52
53 for ( Value<?> value : attribute )
54 {
55 if ( value instanceof BinaryValue )
56 {
57 byte[] bytesValue = value.getBytes();
58
59 int length = bytesValue.length;
60
61 // Same size
62 byte[] newValue = new byte[length];
63
64 for ( int i = 0; i < length; i++ )
65 {
66 newValue[i] = ( byte ) ( random.nextInt( 'Z' - 'A' ) + 'A' );
67 }
68
69 try
70 {
71 result.add( newValue );
72 }
73 catch ( LdapInvalidAttributeValueException e )
74 {
75 // TODO : handle that
76 }
77 }
78 else
79 {
80 byte[] byteValue = value.getBytes();
81
82 // Same size
83 byte[] newValue = new byte[byteValue.length];
84
85 for ( int i = 0; i < byteValue.length; i++ )
86 {
87 newValue[i] = ( byte ) random.nextInt();
88 }
89
90 try
91 {
92 result.add( newValue );
93 }
94 catch ( LdapInvalidAttributeValueException e )
95 {
96 // TODO : handle that
97 }
98 }
99 }
100
101 return result;
102 }
103 }