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.shared.ldap.model.schema.syntaxCheckers; 021 022 023import org.apache.directory.shared.ldap.model.constants.SchemaConstants; 024import org.apache.directory.shared.ldap.model.name.Dn; 025import org.apache.directory.shared.ldap.model.schema.SyntaxChecker; 026import org.apache.directory.shared.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 * Creates a new instance of DNSyntaxChecker. 045 */ 046 public DNSyntaxChecker() 047 { 048 super( SchemaConstants.DN_SYNTAX ); 049 } 050 051 052 /** 053 * {@inheritDoc} 054 */ 055 public boolean isValidSyntax( Object value ) 056 { 057 String strValue = null; 058 059 if ( value == null ) 060 { 061 LOG.debug( "Syntax invalid for 'null'" ); 062 return false; 063 } 064 065 if ( value instanceof String ) 066 { 067 strValue = ( String ) value; 068 } 069 else if ( value instanceof byte[] ) 070 { 071 strValue = Strings.utf8ToString((byte[]) value); 072 } 073 else 074 { 075 strValue = value.toString(); 076 } 077 078 if ( strValue.length() == 0 ) 079 { 080 // TODO: this should be a false, but for 081 // some reason, the principal is empty in 082 // some cases. 083 LOG.debug( "Syntax valid for '{}'", value ); 084 return true; 085 } 086 087 // Check that the value is a valid Dn 088 boolean result = Dn.isValid(strValue); 089 090 if ( result ) 091 { 092 LOG.debug( "Syntax valid for '{}'", value ); 093 } 094 else 095 { 096 LOG.debug( "Syntax invalid for '{}'", value ); 097 } 098 099 return result; 100 } 101}