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, eCopyOfUuidSyntaxCheckerither 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.syntaxes;
021
022 import org.apache.directory.shared.ldap.constants.SchemaConstants;
023 import org.apache.directory.shared.ldap.schema.AbstractSyntaxChecker;
024 import org.apache.directory.shared.ldap.schema.SyntaxChecker;
025
026
027 /**
028 * An CSN SID syntax checker.
029 *
030 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
031 * @version $Rev: 736240 $
032 */
033 public class CsnSidSyntaxChecker extends AbstractSyntaxChecker
034 {
035 /** the Apache assigned internal OID for this syntax checker */
036 public static final SyntaxChecker INSTANCE = new CsnSidSyntaxChecker();
037
038
039 /**
040 * Creates a new instance of CsnSyntaxChecker.
041 */
042 public CsnSidSyntaxChecker()
043 {
044 super( SchemaConstants.CSN_SID_SYNTAX );
045 }
046
047
048 /**
049 *
050 * Creates a new instance of CsnSidSyntaxChecker.
051 *
052 * @param oid the oid to associate with this new SyntaxChecker
053 *
054 */
055 protected CsnSidSyntaxChecker( String oid )
056 {
057 super( oid );
058 }
059
060
061 /**
062 * @see org.apache.directory.shared.ldap.schema.SyntaxChecker#isValidSyntax(Object)
063 *
064 * The value is stored as a String internally.
065 *
066 * @param value the value of some attribute with the syntax
067 * @return true if the value is in the valid syntax, false otherwise
068 */
069 public boolean isValidSyntax( Object value )
070 {
071 if ( value == null )
072 {
073 return false;
074 }
075
076 if ( ! ( value instanceof String ) )
077 {
078 return false;
079 }
080
081 String sidStr = (String)value;
082
083 if ( sidStr.length() > 3 )
084 {
085 return false;
086 }
087
088 // The SID must be an hexadecimal number between 0x00 and 0xFFF
089
090 try
091 {
092 int sid = Integer.parseInt( sidStr, 16 );
093
094 if ( ( sid < 0 ) || ( sid > 0x0fff ) )
095 {
096 return false;
097 }
098 }
099 catch ( NumberFormatException nfe )
100 {
101 return false;
102 }
103
104 return true;
105 }
106 }