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 */ 020package org.apache.directory.api.ldap.model.schema.syntaxCheckers; 021 022 023import org.apache.directory.api.ldap.model.constants.SchemaConstants; 024import org.apache.directory.api.ldap.model.schema.SyntaxChecker; 025import org.apache.directory.api.util.Strings; 026import org.slf4j.Logger; 027import 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> = "$" <dstring> <dstring-list> | e 036 * 037 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> 038 */ 039@SuppressWarnings("serial") 040public class PostalAddressSyntaxChecker extends SyntaxChecker 041{ 042 /** A logger for this class */ 043 private static final Logger LOG = LoggerFactory.getLogger( PostalAddressSyntaxChecker.class ); 044 045 046 /** 047 * Creates a new instance of PostalAddressSyntaxChecker. 048 */ 049 public PostalAddressSyntaxChecker() 050 { 051 super( SchemaConstants.POSTAL_ADDRESS_SYNTAX ); 052 } 053 054 055 /** 056 * {@inheritDoc} 057 */ 058 public boolean isValidSyntax( Object value ) 059 { 060 String strValue = null; 061 062 if ( value == null ) 063 { 064 LOG.debug( "Syntax invalid for 'null'" ); 065 return false; 066 } 067 068 if ( value instanceof String ) 069 { 070 strValue = ( String ) value; 071 } 072 else if ( value instanceof byte[] ) 073 { 074 strValue = Strings.utf8ToString( ( byte[] ) value ); 075 } 076 else 077 { 078 strValue = value.toString(); 079 } 080 081 if ( strValue.length() == 0 ) 082 { 083 LOG.debug( "Syntax invalid for '{}'", value ); 084 return false; 085 } 086 087 // Search for the '$' separator 088 int dollar = strValue.indexOf( '$' ); 089 090 if ( dollar == -1 ) 091 { 092 // No '$' => only a dstring 093 LOG.debug( "Syntax valid for '{}'", value ); 094 return true; 095 } 096 097 int pos = 0; 098 do 099 { 100 // check that the element between each '$' is not empty 101 String address = strValue.substring( pos, dollar ); 102 103 if ( Strings.isEmpty( address ) ) 104 { 105 LOG.debug( "Syntax invalid for '{}'", value ); 106 return false; 107 } 108 109 pos = dollar + 1; 110 111 if ( pos == strValue.length() ) 112 { 113 // we should not have a '$' at the end 114 LOG.debug( "Syntax invalid for '{}'", value ); 115 return false; 116 } 117 118 dollar = strValue.indexOf( '$', pos ); 119 } 120 while ( dollar > -1 ); 121 122 return true; 123 } 124}