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 */ 020package org.apache.directory.api.ldap.model.schema.syntaxCheckers; 021 022 023import org.apache.directory.api.ldap.model.constants.SchemaConstants; 024import org.apache.directory.api.ldap.model.name.Dn; 025import org.apache.directory.api.ldap.model.schema.SyntaxChecker; 026import org.apache.directory.api.util.Strings; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030 031/** 032 * A SyntaxChecker which verifies that a value is a valid Dn. We just check 033 * that the Dn is valid, we don't need to verify each of the Rdn syntax. 034 * 035 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 036 */ 037@SuppressWarnings("serial") 038public class DnSyntaxChecker extends SyntaxChecker 039{ 040 /** A logger for this class */ 041 private static final Logger LOG = LoggerFactory.getLogger( DnSyntaxChecker.class ); 042 043 044 /** 045 * Creates a new instance of DNSyntaxChecker. 046 */ 047 public DnSyntaxChecker() 048 { 049 super( SchemaConstants.DN_SYNTAX ); 050 } 051 052 053 /** 054 * {@inheritDoc} 055 */ 056 public boolean isValidSyntax( Object value ) 057 { 058 String strValue = null; 059 060 if ( value == null ) 061 { 062 LOG.debug( "Syntax invalid for 'null'" ); 063 return false; 064 } 065 066 if ( value instanceof String ) 067 { 068 strValue = ( String ) value; 069 } 070 else if ( value instanceof byte[] ) 071 { 072 strValue = Strings.utf8ToString( ( byte[] ) value ); 073 } 074 else 075 { 076 strValue = value.toString(); 077 } 078 079 if ( strValue.length() == 0 ) 080 { 081 // TODO: this should be a false, but for 082 // some reason, the principal is empty in 083 // some cases. 084 LOG.debug( "Syntax valid for '{}'", value ); 085 return true; 086 } 087 088 // Check that the value is a valid Dn 089 boolean result = Dn.isValid( strValue ); 090 091 if ( result ) 092 { 093 LOG.debug( "Syntax valid for '{}'", value ); 094 } 095 else 096 { 097 LOG.debug( "Syntax invalid for '{}'", value ); 098 } 099 100 return result; 101 } 102}