| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.directory.api.ldap.model.schema.syntaxCheckers; |
| |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.schema.SyntaxChecker; |
| import org.apache.directory.api.util.Chars; |
| import org.apache.directory.api.util.Strings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A SyntaxChecker which verifies that a value is a delivery method |
| * according to RFC 4517. |
| * |
| * From RFC 4517 & RFC 4512: |
| * |
| * DeliveryMethod = pdm *( WSP DOLLAR WSP pdm ) |
| * |
| * pdm = "any" | "mhs" | "physical" | "telex" | "teletex" | |
| * "g3fax" | "g4fax" | "ia5" | "videotex" | "telephone" |
| * |
| * WSP = 0*SPACE ; zero or more " " |
| * DOLLAR = %x24 ; dollar sign ("$") |
| * SPACE = %x20 ; space (" ") |
| * |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @SuppressWarnings("serial") |
| public class DeliveryMethodSyntaxChecker extends SyntaxChecker |
| { |
| /** A logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( DeliveryMethodSyntaxChecker.class ); |
| |
| private static final String[] PDMS = |
| { |
| "any", "mhs", "physical", "telex", "teletex", |
| "g3fax", "g4fax", "ia5", "videotex", "telephone" |
| }; |
| |
| /** The Set which contains the delivery methods */ |
| private static final Set<String> DELIVERY_METHODS = new HashSet<String>(); |
| |
| /** Initialization of the delivery methods set */ |
| static |
| { |
| for ( String country : PDMS ) |
| { |
| DELIVERY_METHODS.add( country ); |
| } |
| } |
| |
| |
| /** |
| * |
| * Creates a new instance of DeliveryMethodSyntaxChecker. |
| * |
| */ |
| public DeliveryMethodSyntaxChecker() |
| { |
| super( SchemaConstants.DELIVERY_METHOD_SYNTAX ); |
| } |
| |
| |
| /** |
| * |
| * Check if the string contains a delivery method which has |
| * not already been found. |
| * |
| * @param strValue The string we want to look into for a PDM |
| * @param pos The current position in the string |
| * @param pdms The set containing all the PDM |
| * @return if a Prefered Delivery Method is found in the given string, returns |
| * its position, otherwise, returns -1 |
| */ |
| private int isPdm( String strValue, int start, Set<String> pdms ) |
| { |
| int pos = start; |
| |
| while ( Chars.isAlphaDigit( strValue, pos ) ) |
| { |
| pos++; |
| } |
| |
| // No ascii string, this is not a delivery method |
| if ( pos == start ) |
| { |
| return -1; |
| } |
| |
| String pdm = strValue.substring( start, pos ); |
| |
| if ( !DELIVERY_METHODS.contains( pdm ) ) |
| { |
| // The delivery method is unknown |
| return -1; |
| } |
| else |
| { |
| if ( pdms.contains( pdm ) ) |
| { |
| // The delivery method has already been found |
| return -1; |
| } |
| else |
| { |
| pdms.add( pdm ); |
| return pos; |
| } |
| } |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean isValidSyntax( Object value ) |
| { |
| String strValue = null; |
| |
| if ( value == null ) |
| { |
| LOG.debug( "Syntax invalid for 'null'" ); |
| return false; |
| } |
| |
| if ( value instanceof String ) |
| { |
| strValue = ( String ) value; |
| } |
| else if ( value instanceof byte[] ) |
| { |
| strValue = Strings.utf8ToString( ( byte[] ) value ); |
| } |
| else |
| { |
| strValue = value.toString(); |
| } |
| |
| if ( strValue.length() == 0 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // We will get the first delivery method |
| int length = strValue.length(); |
| int pos = 0; |
| Set<String> pmds = new HashSet<String>(); |
| |
| pos = isPdm( strValue, pos, pmds ); |
| if ( pos == -1 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // We have found at least the first pmd, |
| // now iterate through the other ones. We may have |
| // SP* '$' SP* before each pmd. |
| while ( pos < length ) |
| { |
| // Skip spaces |
| while ( Strings.isCharASCII( strValue, pos, ' ' ) ) |
| { |
| pos++; |
| } |
| |
| if ( !Strings.isCharASCII( strValue, pos, '$' ) ) |
| { |
| // A '$' was expected |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| else |
| { |
| pos++; |
| } |
| |
| // Skip spaces |
| while ( Strings.isCharASCII( strValue, pos, ' ' ) ) |
| { |
| pos++; |
| } |
| |
| pos = isPdm( strValue, pos, pmds ); |
| if ( pos == -1 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| } |
| |
| LOG.debug( "Syntax valid for '{}'", value ); |
| return true; |
| } |
| } |