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.schema.SyntaxChecker; 025 import org.apache.directory.shared.ldap.util.StringTools; 026 import org.slf4j.Logger; 027 import org.slf4j.LoggerFactory; 028 029 030 /** 031 * A SyntaxChecker which verifies that a value is a PostalAddress according to 032 * RFC 4517 : 033 * 034 * <postal-address> = <dstring> <dstring-list> 035 * <dstring-list> = "$" <dstring> <dstring-list> | e 036 * 037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 038 * @version $Rev$ 039 */ 040 public class PostalAddressSyntaxChecker extends SyntaxChecker 041 { 042 /** A logger for this class */ 043 private static final Logger LOG = LoggerFactory.getLogger( PostalAddressSyntaxChecker.class ); 044 045 /** The serialVersionUID */ 046 private static final long serialVersionUID = 1L; 047 048 /** 049 * Creates a new instance of PostalAddressSyntaxChecker. 050 */ 051 public PostalAddressSyntaxChecker() 052 { 053 super( SchemaConstants.POSTAL_ADDRESS_SYNTAX ); 054 } 055 056 057 /** 058 * {@inheritDoc} 059 */ 060 public boolean isValidSyntax( Object value ) 061 { 062 String strValue = null; 063 064 if ( value == null ) 065 { 066 LOG.debug( "Syntax invalid for '{}'", value ); 067 return false; 068 } 069 070 if ( value instanceof String ) 071 { 072 strValue = ( String ) value; 073 } 074 else if ( value instanceof byte[] ) 075 { 076 strValue = StringTools.utf8ToString( ( byte[] ) value ); 077 } 078 else 079 { 080 strValue = value.toString(); 081 } 082 083 if ( strValue.length() == 0 ) 084 { 085 LOG.debug( "Syntax invalid for '{}'", value ); 086 return false; 087 } 088 089 // Search for the '$' separator 090 int dollar = strValue.indexOf( '$' ); 091 092 if ( dollar == -1 ) 093 { 094 // No '$' => only a dstring 095 LOG.debug( "Syntax valid for '{}'", value ); 096 return true; 097 } 098 099 int pos = 0; 100 do 101 { 102 // check that the element between each '$' is not empty 103 String address = strValue.substring( pos, dollar ); 104 105 if ( StringTools.isEmpty( address ) ) 106 { 107 LOG.debug( "Syntax invalid for '{}'", value ); 108 return false; 109 } 110 111 pos = dollar + 1; 112 113 if ( pos == strValue.length() ) 114 { 115 // we should not have a '$' at the end 116 LOG.debug( "Syntax invalid for '{}'", value ); 117 return false; 118 } 119 120 dollar = strValue.indexOf( '$', pos ); 121 } while ( dollar > -1 ); 122 123 return true; 124 } 125 }