| /* |
| * 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 |
| * |
| * https://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.api.ldap.model.ldif.anonymizer; |
| |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| |
| /** |
| * An abstract class implementing the default behavior of an Aninymizer instance |
| * |
| * @param <K> The type of object being anonymized |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public abstract class AbstractAnonymizer<K> implements Anonymizer<K> |
| { |
| /** The SchemaManager instance */ |
| protected SchemaManager schemaManager; |
| |
| /** The map of AttributeType'sOID we want to anonymize. They are all associated with anonymizers */ |
| protected Map<String, Anonymizer<K>> attributeAnonymizers = new HashMap<>(); |
| |
| /** A flag set to <tt>true</tt> if the AttributeType is case sensitive */ |
| protected boolean caseSensitive = false; |
| |
| /** Map of chars to use in the anonymized values 0 5 10 15 20 25 30 35 40*/ |
| private static final char[] NOT_SENSITIVE_MAP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'()-./".toCharArray(); |
| private static final char[] SENSITIVE_MAP = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'()-./abcdefghijklmnopqrstuvwxyz".toCharArray(); |
| |
| /** A table containing booleans when the corresponding char is printable */ |
| private static final int[] CHAR_MAP = |
| { |
| // ---, ---, ---, ---, ---, ---, ---, --- |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| // ---, ---, ---, ---, ---, ---, ---, --- |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| // ---, ---, ---, ---, ---, ---, ---, --- |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| // ---, ---, ---, ---, ---, ---, ---, --- |
| 0, 0, 0, 0, 0, 0, 0, 0, |
| // ---, ---, ---, ---, ---, ---, ---, "'" |
| 0, 0, 0, 0, 0, 0, 0, 36, |
| // '(', ')', ---, '+', ',', '-', '.', '/' |
| 37, 38, 0, 0, 0, 39, 40, 41, |
| // '0', '1', '2', '3', '4', '5', '6', '7', |
| 26, 27, 28, 29, 30, 31, 32, 33, |
| // '8', '9', ':', ---, ---, '=', ---, '?' |
| 34, 35, 0, 0, 0, 0, 0, 26, |
| // ---, 'A', 'B', 'C', 'D', 'E', 'F', 'G', |
| 0, 0, 1, 2, 3, 4, 5, 6, |
| // 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O' |
| 7, 8, 9, 10, 11, 12, 13, 14, |
| // 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W' |
| 15, 16, 17, 18, 19, 20, 21, 22, |
| // 'X', 'Y', 'Z', ---, ---, ---, ---, --- |
| 23, 24, 25, 0, 0, 0, 0, 0, |
| // ---, 'a', 'b', 'c', 'd', 'e', 'f', 'g' |
| 0, 42, 43, 44, 45, 46, 47, 48, |
| // 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o' |
| 49, 50, 51, 52, 53, 54, 55, 56, |
| // 'p', 'q', 'r', 's', 't', 'u', 'v', 'w' |
| 57, 58, 59, 60, 61, 62, 63, 64, |
| // 'x', 'y', 'z', ---, ---, ---, ---, --- |
| 65, 66, 67, 0, 0, 0, 0, 0, |
| }; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public void setSchemaManager( SchemaManager schemaManager ) |
| { |
| this.schemaManager = schemaManager; |
| } |
| |
| |
| /** |
| * Set the list of existing anonymizers |
| * |
| * @param attributeAnonymizers The list of existing anonymizers |
| */ |
| @Override |
| public void setAnonymizers( Map<String, Anonymizer<K>> attributeAnonymizers ) |
| { |
| this.attributeAnonymizers = attributeAnonymizers; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Map<Integer, String> getLatestStringMap() |
| { |
| return null; |
| } |
| |
| |
| /** |
| * @param latestStringMap The latest String anonymized value map |
| */ |
| @Override |
| public void setLatestStringMap( Map<Integer, String> latestStringMap ) |
| { |
| // Do nothing |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Map<Integer, byte[]> getLatestBytesMap() |
| { |
| return null; |
| } |
| |
| |
| /** |
| * @param latestBytesMap The latest byte[] anonymized value map |
| */ |
| @Override |
| public void setLatestBytesMap( Map<Integer, byte[]> latestBytesMap ) |
| { |
| // Do nothing |
| } |
| |
| |
| /** |
| * Compute the next String value |
| * |
| * @param valStr The original value |
| * @return The anonymized value |
| */ |
| protected String computeNewValue( String valStr ) |
| { |
| int length = valStr.length(); |
| String latestString = getLatestStringMap().get( length ); |
| char[] charMap; |
| |
| if ( caseSensitive ) |
| { |
| charMap = SENSITIVE_MAP; |
| } |
| else |
| { |
| charMap = NOT_SENSITIVE_MAP; |
| } |
| |
| int lastMapChar = charMap.length - 1; |
| |
| if ( latestString == null ) |
| { |
| // No previous value : create a new one |
| char[] newValue = new char[length]; |
| |
| Arrays.fill( newValue, charMap[0] ); |
| |
| String anonymizedValue = new String( newValue ); |
| getLatestStringMap().put( length, anonymizedValue ); |
| |
| return anonymizedValue; |
| } |
| else |
| { |
| // Compute a new value |
| char[] latest = latestString.toCharArray(); |
| boolean overflow = true; |
| |
| for ( int i = length - 1; i >= 0; i-- ) |
| { |
| if ( latest[i] == charMap[lastMapChar] ) |
| { |
| latest[i] = charMap[0]; |
| } |
| else |
| { |
| latest[i] = charMap[CHAR_MAP[latest[i]] + 1]; |
| overflow = false; |
| break; |
| } |
| } |
| |
| String anonymizedValue = new String( latest ); |
| |
| if ( overflow ) |
| { |
| // We have exhausted all the possible values... |
| String msg = I18n.err( I18n.ERR_13435_CANNOT_COMPUTE_NEW_VALUE, anonymizedValue ); |
| |
| throw new RuntimeException( msg ); |
| } |
| |
| getLatestStringMap().put( length, anonymizedValue ); |
| |
| return anonymizedValue; |
| } |
| } |
| |
| |
| /** |
| * Compute the next byte[] value |
| * |
| * @param valBytes The original value |
| * @return The anonymized value |
| */ |
| protected byte[] computeNewValue( byte[] valBytes ) |
| { |
| int length = valBytes.length; |
| byte[] latestBytes = getLatestBytesMap().get( length ); |
| |
| if ( latestBytes == null ) |
| { |
| // No previous value : create a new one |
| byte[] newValue = new byte[length]; |
| |
| Arrays.fill( newValue, ( byte ) 'A' ); |
| |
| getLatestBytesMap().put( length, newValue ); |
| |
| return newValue; |
| } |
| else |
| { |
| // Compute a new value |
| boolean overflow = true; |
| |
| for ( int i = length - 1; i >= 0; i-- ) |
| { |
| if ( latestBytes[i] == ( byte ) 'Z' ) |
| { |
| latestBytes[i] = ( byte ) 'A'; |
| } |
| else |
| { |
| latestBytes[i]++; |
| overflow = false; |
| break; |
| } |
| } |
| |
| if ( overflow ) |
| { |
| // We have exhausted all the possible values... |
| String msg = I18n.err( I18n.ERR_13435_CANNOT_COMPUTE_NEW_VALUE, latestBytes ); |
| |
| throw new RuntimeException( msg ); |
| } |
| |
| return latestBytes; |
| } |
| } |
| } |