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1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, eCopyOfUuidSyntaxCheckerither express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  package org.apache.directory.api.ldap.model.schema.syntaxCheckers;
21  
22  
23  import org.apache.directory.api.ldap.model.constants.SchemaConstants;
24  import org.apache.directory.api.ldap.model.schema.SyntaxChecker;
25  import org.slf4j.Logger;
26  import org.slf4j.LoggerFactory;
27  
28  
29  /**
30   * An CSN SID syntax checker.
31   * 
32   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
33   */
34  @SuppressWarnings("serial")
35  public class CsnSidSyntaxChecker extends SyntaxChecker
36  {
37      /** A logger for this class */
38      private static final Logger LOG = LoggerFactory.getLogger( CsnSidSyntaxChecker.class );
39  
40  
41      /**
42       * Creates a new instance of CsnSyntaxChecker.
43       */
44      public CsnSidSyntaxChecker()
45      {
46          super( SchemaConstants.CSN_SID_SYNTAX );
47      }
48  
49  
50      /**
51       * {@inheritDoc}
52       */
53      public boolean isValidSyntax( Object value )
54      {
55          if ( value == null )
56          {
57              LOG.debug( "Syntax invalid for 'null'" );
58              return false;
59          }
60  
61          if ( !( value instanceof String ) )
62          {
63              LOG.debug( "Syntax invalid for '{}'", value );
64              return false;
65          }
66  
67          String sidStr = ( String ) value;
68  
69          if ( sidStr.length() > 3 )
70          {
71              LOG.debug( "Syntax invalid for '{}'", value );
72              return false;
73          }
74  
75          // The SID must be an hexadecimal number between 0x00 and 0xFFF
76  
77          try
78          {
79              int sid = Integer.parseInt( sidStr, 16 );
80  
81              if ( ( sid < 0 ) || ( sid > 0x0fff ) )
82              {
83                  LOG.debug( "Syntax invalid for '{}'", value );
84                  return false;
85              }
86          }
87          catch ( NumberFormatException nfe )
88          {
89              LOG.debug( "Syntax invalid for '{}'", value );
90              return false;
91          }
92  
93          LOG.debug( "Syntax valid for '{}'", value );
94          return true;
95      }
96  }