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 java.util.regex.Matcher; 024 import java.util.regex.Pattern; 025 026 import org.apache.directory.shared.ldap.constants.SchemaConstants; 027 import org.apache.directory.shared.ldap.schema.SyntaxChecker; 028 import org.apache.directory.shared.ldap.util.StringTools; 029 import org.slf4j.Logger; 030 import org.slf4j.LoggerFactory; 031 032 033 /** 034 * A SyntaxChecker which verifies that a name is valid for an ObjectClass 035 * or an AttributeType<br/><br/> 036 * 037 * <m-name> = <keystring> <br/> 038 * <keystring> = <leadkeychar> *<keychar><br/> 039 * <leadkeychar> = <ALPHA><br/> 040 * <keychar> = <ALPHA> / <DIGIT> / <HYPHEN> / <SEMI><br/> 041 * <ALPHA> = %x41-5A / %x61-7A ; "A"-"Z" / "a"-"z"<br/> 042 * <DIGIT> = %x30 / <LDIGIT ; "0"-"9"<br/> 043 * <LDIGIT> = %x31-39 ; "1"-"9"<br/> 044 * <HYPHEN> = %x2D ; hyphen ("-")<br/> 045 * <SEMI> = %x3B ; semicolon (";")<br/> 046 * 047 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 048 * @version $Rev$ 049 */ 050 public class ObjectNameSyntaxChecker extends SyntaxChecker 051 { 052 /** A logger for this class */ 053 private static final Logger LOG = LoggerFactory.getLogger( ObjectNameSyntaxChecker.class ); 054 055 /** The serialVersionUID */ 056 private static final long serialVersionUID = 1L; 057 058 private static final String REGEXP = "^([a-zA-Z][a-zA-Z0-9-;]*)$"; 059 060 private static final Pattern PATTERN = Pattern.compile( REGEXP ); 061 062 /** 063 * Creates a new instance of ObjectNameSyntaxChecker. 064 */ 065 public ObjectNameSyntaxChecker() 066 { 067 super( SchemaConstants.OBJECT_NAME_SYNTAX ); 068 } 069 070 071 /** 072 * {@inheritDoc} 073 */ 074 public boolean isValidSyntax( Object value ) 075 { 076 String strValue = null; 077 078 if ( value == null ) 079 { 080 LOG.debug( "Syntax invalid for '{}'", value ); 081 return false; 082 } 083 084 if ( value instanceof String ) 085 { 086 strValue = ( String ) value; 087 } 088 else if ( value instanceof byte[] ) 089 { 090 strValue = StringTools.utf8ToString( ( byte[] ) value ); 091 } 092 else 093 { 094 strValue = value.toString(); 095 } 096 097 if ( strValue.length() == 0 ) 098 { 099 LOG.debug( "Syntax invalid for '{}'", value ); 100 return false; 101 } 102 103 // Search for the '$' separator 104 Matcher match = PATTERN.matcher ( strValue ); 105 106 boolean result = match.matches(); 107 108 if ( result ) 109 { 110 LOG.debug( "Syntax valid for '{}'", value ); 111 } 112 else 113 { 114 LOG.debug( "Syntax invalid for '{}'", value ); 115 } 116 117 return result; 118 } 119 }