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 */ 020 package org.apache.directory.shared.ldap.schema.syntaxCheckers; 021 022 023 import org.apache.directory.shared.ldap.constants.SchemaConstants; 024 import org.apache.directory.shared.ldap.name.DN; 025 import org.apache.directory.shared.ldap.schema.SyntaxChecker; 026 import org.apache.directory.shared.ldap.util.StringTools; 027 import org.slf4j.Logger; 028 import 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 * @version $Rev$ 037 */ 038 public class DNSyntaxChecker extends SyntaxChecker 039 { 040 /** A logger for this class */ 041 private static final Logger LOG = LoggerFactory.getLogger( DNSyntaxChecker.class ); 042 043 /** The serialVersionUID */ 044 private static final long serialVersionUID = 1L; 045 046 /** 047 * Creates a new instance of DNSyntaxChecker. 048 */ 049 public DNSyntaxChecker() 050 { 051 super( SchemaConstants.DN_SYNTAX ); 052 } 053 054 055 /** 056 * {@inheritDoc} 057 */ 058 public boolean isValidSyntax( Object value ) 059 { 060 String strValue = null; 061 062 if ( value == null ) 063 { 064 LOG.debug( "Syntax invalid for '{}'", value ); 065 return false; 066 } 067 068 if ( value instanceof String ) 069 { 070 strValue = ( String ) value; 071 } 072 else if ( value instanceof byte[] ) 073 { 074 strValue = StringTools.utf8ToString( ( byte[] ) value ); 075 } 076 else 077 { 078 strValue = value.toString(); 079 } 080 081 if ( strValue.length() == 0 ) 082 { 083 // TODO: this should be a false, but for 084 // some reason, the principal is empty in 085 // some cases. 086 LOG.debug( "Syntax valid for '{}'", value ); 087 return true; 088 } 089 090 // Check that the value is a valid DN 091 boolean result = DN.isValid( strValue ); 092 093 if ( result ) 094 { 095 LOG.debug( "Syntax valid for '{}'", value ); 096 } 097 else 098 { 099 LOG.debug( "Syntax invalid for '{}'", value ); 100 } 101 102 return result; 103 } 104 }