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
024 import org.apache.directory.shared.asn1.primitives.OID;
025 import org.apache.directory.shared.ldap.constants.SchemaConstants;
026 import org.apache.directory.shared.ldap.schema.SyntaxChecker;
027 import org.apache.directory.shared.ldap.util.StringTools;
028 import org.slf4j.Logger;
029 import org.slf4j.LoggerFactory;
030
031
032 /**
033 * A SyntaxChecker which verifies that a value is a numeric oid
034 * according to RFC 4512.
035 *
036 * From RFC 4512 :
037 *
038 * numericoid = number 1*( DOT number )
039 * number = DIGIT | ( LDIGIT 1*DIGIT )
040 * DIGIT = %x30 | LDIGIT ; "0"-"9"
041 * LDIGIT = %x31-39 ; "1"-"9"
042 * DOT = %x2E ; period (".")
043
044 *
045 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
046 * @version $Rev$
047 */
048 public class NumericOidSyntaxChecker extends SyntaxChecker
049 {
050 /** A logger for this class */
051 private static final Logger LOG = LoggerFactory.getLogger( NumericOidSyntaxChecker.class );
052
053 /** The serialVersionUID */
054 private static final long serialVersionUID = 1L;
055
056 /**
057 * Creates a new instance of NumericOidSyntaxChecker.
058 */
059 public NumericOidSyntaxChecker()
060 {
061 super( SchemaConstants.NUMERIC_OID_SYNTAX );
062 }
063
064
065 /**
066 * {@inheritDoc}
067 */
068 public boolean isValidSyntax( Object value )
069 {
070 String strValue = null;
071
072 if ( value == null )
073 {
074 LOG.debug( "Syntax invalid for '{}'", value );
075 return false;
076 }
077
078 if ( value instanceof String )
079 {
080 strValue = ( String ) value;
081 }
082 else if ( value instanceof byte[] )
083 {
084 strValue = StringTools.utf8ToString( ( byte[] ) value );
085 }
086 else
087 {
088 strValue = value.toString();
089 }
090
091 if ( strValue.length() == 0 )
092 {
093 LOG.debug( "Syntax invalid for '{}'", value );
094 return false;
095 }
096
097 // Just check that the value is a valid OID
098 boolean result = ( OID.isOID( strValue ) );
099
100 if ( result )
101 {
102 LOG.debug( "Syntax valid for '{}'", value );
103 }
104 else
105 {
106 LOG.debug( "Syntax invalid for '{}'", value );
107 }
108
109 return result;
110 }
111 }