| /* |
| * 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.shared.ldap.schema.syntaxCheckers; |
| |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.directory.shared.ldap.constants.SchemaConstants; |
| import org.apache.directory.shared.ldap.schema.SyntaxChecker; |
| import org.apache.directory.shared.ldap.util.StringTools; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A SyntaxChecker which verifies that a value is a DSEType according to |
| * http://tools.ietf.org/id/draft-ietf-asid-ldapv3-attributes-03.txt, par 6.2.1.5 : |
| * |
| * <DSEType> ::= '(' <sp>* <DSEBit> <sp>* <DSEBitList> ')' |
| * <DSEBitList> ::= '$' <sp>* <DSEBit> <sp>* <DSEBitList> | e |
| * <DSEBit> ::= 'root' | 'glue' | 'cp' | 'entry' | 'alias' | 'subr' | |
| * 'nssr' | 'supr' | 'xr' | 'admPoint' | 'subentry' | |
| * 'shadow' | 'zombie' | 'immSupr' | 'rhob' | 'sa' |
| * |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class DSETypeSyntaxChecker extends SyntaxChecker |
| { |
| /** A logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( DSETypeSyntaxChecker.class ); |
| |
| /** The serialVersionUID */ |
| private static final long serialVersionUID = 1L; |
| |
| /** The DSE BITS keywords */ |
| private static final String[] DSE_BITS_STRINGS = |
| { |
| "root", "glue", "cp", "entry", "alias", "subr", |
| "nssr", "supr", "xr", "admPoint", "subentry", |
| "shadow", "zombie", "immSupr", "rhob", "sa" |
| }; |
| |
| |
| /** The Set which contains the DESBits */ |
| private static final Set<String> DSE_BITS = new HashSet<String>(); |
| |
| /** Initialization of the country set */ |
| static |
| { |
| for ( String country:DSE_BITS_STRINGS ) |
| { |
| DSE_BITS.add( country ); |
| } |
| } |
| |
| |
| /** |
| * |
| * Creates a new instance of DSETypeSyntaxChecker. |
| * |
| */ |
| public DSETypeSyntaxChecker() |
| { |
| super( SchemaConstants.DSE_TYPE_SYNTAX ); |
| } |
| |
| |
| /** |
| * {@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 = StringTools.utf8ToString( ( byte[] ) value ); |
| } |
| else |
| { |
| strValue = value.toString(); |
| } |
| |
| // We must have at least '(cp)', '(xr)' or '(ca)' |
| if ( strValue.length() < 4 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // Check the opening and closing parenthesis |
| if ( ( strValue.charAt( 0 ) != '(' ) || |
| ( strValue.charAt( strValue.length() - 1 ) != ')' ) ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| Set<String> keywords = new HashSet<String>(); |
| int len = strValue.length() - 1; |
| boolean needKeyword = true; |
| |
| // |
| for ( int i = 1; i < len; /* */ ) |
| { |
| // Skip spaces |
| while ( ( i < len ) && ( strValue.charAt( i ) == ' ' ) ) |
| { |
| i++; |
| } |
| |
| int pos = i; |
| |
| // Search for a keyword |
| while ( ( i < len ) && StringTools.isAlphaASCII( strValue, pos ) ) |
| { |
| pos++; |
| } |
| |
| if ( pos == i ) |
| { |
| // No keyword : error |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| String keyword = strValue.substring( i, pos ); |
| i = pos; |
| |
| if ( !DSE_BITS.contains( keyword ) ) |
| { |
| // Unknown keyword |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // Check that the keyword has not been met |
| if ( keywords.contains( keyword ) ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| keywords.add( keyword ); |
| needKeyword = false; |
| |
| // Skip spaces |
| while ( ( i < len ) && ( strValue.charAt( i ) == ' ' ) ) |
| { |
| i++; |
| } |
| |
| // Do we have another keyword ? |
| if ( ( i < len) && ( strValue.charAt( i ) == '$' ) ) |
| { |
| // yes |
| i++; |
| needKeyword = true; |
| continue; |
| } |
| } |
| |
| // We are done |
| if ( needKeyword ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| } |
| else |
| { |
| LOG.debug( "Syntax valid for '{}'", value ); |
| } |
| |
| return !needKeyword; |
| } |
| } |