| /* |
| * 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.schema.normalizers; |
| |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.entry.Value; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.schema.AttributeType; |
| import org.apache.directory.api.ldap.model.schema.MatchingRule; |
| import org.apache.directory.api.ldap.model.schema.Normalizer; |
| import org.apache.directory.api.ldap.model.schema.SchemaManager; |
| import org.apache.directory.api.util.Hex; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * A Dn Name component Normalizer which uses the bootstrap registries to find |
| * the appropriate normalizer for the attribute of the name component with which |
| * to normalize the name component value. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class ConcreteNameComponentNormalizer implements NameComponentNormalizer |
| { |
| /** the schemaManager used to dynamically resolve Normalizers */ |
| private final SchemaManager schemaManager; |
| |
| |
| /** |
| * Creates a Dn Name component Normalizer which uses the bootstrap |
| * registries to find the appropriate normalizer for the attribute of the |
| * name component with which to normalize the name component value. |
| * |
| * @param schemaManager the schemaManager used to dynamically resolve Normalizers |
| */ |
| public ConcreteNameComponentNormalizer( SchemaManager schemaManager ) |
| { |
| this.schemaManager = schemaManager; |
| } |
| |
| |
| private String unescape( String value ) |
| { |
| char[] newVal = new char[value.length()]; |
| int escaped = 0; |
| char high = 0; |
| char low; |
| int pos = 0; |
| |
| for ( int index = 0; index < value.length(); index++ ) |
| { |
| char c = value.charAt( index ); |
| |
| switch ( escaped ) |
| { |
| case 0: |
| if ( c == '\\' ) |
| { |
| escaped = 1; |
| } |
| else |
| { |
| newVal[pos++] = c; |
| } |
| |
| break; |
| |
| case 1: |
| escaped++; |
| high = c; |
| break; |
| |
| case 2: |
| escaped = 0; |
| low = c; |
| newVal[pos++] = ( char ) Hex.getHexValue( high, low ); |
| break; |
| |
| default: |
| throw new IllegalStateException( I18n.err( I18n.ERR_13713_ESCAPED_WRONG_VALUE, value ) ); |
| } |
| } |
| |
| return new String( newVal, 0, pos ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object normalizeByName( String name, String value ) throws LdapException |
| { |
| AttributeType attributeType = schemaManager.lookupAttributeTypeRegistry( name ); |
| Normalizer normalizer = lookup( name ); |
| |
| if ( attributeType.getSyntax().isHumanReadable() ) |
| { |
| return normalizer.normalize( value ); |
| } |
| else |
| { |
| String unescaped = unescape( value ); |
| |
| return normalizer.normalize( unescaped ); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object normalizeByName( AttributeType attributeType, String value ) throws LdapException |
| { |
| MatchingRule mrule = attributeType.getEquality(); |
| Normalizer normalizer; |
| |
| if ( mrule == null ) |
| { |
| return new NoOpNormalizer( attributeType.getOid() ); |
| } |
| else |
| { |
| normalizer = attributeType.getEquality().getNormalizer(); |
| } |
| |
| if ( attributeType.getSyntax().isHumanReadable() ) |
| { |
| return normalizer.normalize( value ); |
| } |
| else |
| { |
| String unescaped = unescape( value ); |
| |
| return normalizer.normalize( unescaped ); |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object normalizeByName( String name, byte[] value ) throws LdapException |
| { |
| AttributeType attributeType = schemaManager.getAttributeType( name ); |
| |
| return new Value( attributeType, value ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object normalizeByOid( String oid, String value ) throws LdapException |
| { |
| return lookup( oid ).normalize( value ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Object normalizeByOid( String oid, byte[] value ) throws LdapException |
| { |
| return lookup( oid ).normalize( Strings.utf8ToString( value ) ); |
| } |
| |
| |
| /** |
| * Looks up the Normalizer to use for a name component using the attributeId |
| * for the name component. First the attribute is resolved, then its |
| * equality matching rule is looked up. The normalizer of that matching |
| * rule is returned. |
| * |
| * @param id the name or oid of the attribute in the name component to |
| * normalize the value of |
| * @return the Normalizer to use for normalizing the value of the attribute |
| * @throws LdapException if there are failures resolving the Normalizer |
| */ |
| private Normalizer lookup( String id ) throws LdapException |
| { |
| AttributeType type = schemaManager.lookupAttributeTypeRegistry( id ); |
| MatchingRule mrule = type.getEquality(); |
| |
| if ( mrule == null ) |
| { |
| return new NoOpNormalizer( id ); |
| } |
| |
| return mrule.getNormalizer(); |
| } |
| |
| |
| /** |
| * @see NameComponentNormalizer#isDefined(String) |
| */ |
| @Override |
| public boolean isDefined( String id ) |
| { |
| return schemaManager.getAttributeTypeRegistry().contains( id ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String normalizeName( String attributeName ) throws LdapException |
| { |
| return schemaManager.getAttributeTypeRegistry().getOidByName( attributeName ); |
| } |
| } |