| /* |
| * 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 |
| * |
| * https://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.codec.search; |
| |
| |
| import java.nio.BufferOverflowException; |
| import java.nio.ByteBuffer; |
| |
| import org.apache.directory.api.asn1.EncoderException; |
| import org.apache.directory.api.asn1.ber.tlv.BerValue; |
| import org.apache.directory.api.asn1.ber.tlv.TLV; |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.codec.api.LdapCodecConstants; |
| import org.apache.directory.api.ldap.model.entry.Value; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * The search request filter Matching Rule assertion |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class ExtensibleMatchFilter extends Filter |
| { |
| /** The expected lenth of the Matching Rule Assertion */ |
| private int expectedMatchingRuleLength; |
| |
| /** Matching rule */ |
| private String matchingRule; |
| |
| /** Matching rule bytes */ |
| private byte[] matchingRuleBytes; |
| |
| /** Matching rule type */ |
| private String type; |
| |
| private byte[] typeBytes; |
| |
| /** Matching rule value */ |
| private Value matchValue; |
| |
| /** The dnAttributes flag */ |
| private boolean dnAttributes = false; |
| |
| /** The extensible match length */ |
| private int extensibleMatchLength; |
| |
| |
| /** |
| * Creates a new ExtensibleMatchFilter object. The dnAttributes flag |
| * defaults to false. |
| * |
| * @param tlvId The TLV identifier |
| */ |
| public ExtensibleMatchFilter( int tlvId ) |
| { |
| super( tlvId ); |
| } |
| |
| |
| /** |
| * Creates a new ExtensibleMatchFilter object. The dnAttributes flag |
| * defaults to false. |
| */ |
| public ExtensibleMatchFilter() |
| { |
| super(); |
| } |
| |
| |
| /** |
| * Get the dnAttributes flag |
| * |
| * @return Returns the dnAttributes. |
| */ |
| public boolean isDnAttributes() |
| { |
| return dnAttributes; |
| } |
| |
| |
| /** |
| * Set the dnAttributes flag |
| * |
| * @param dnAttributes The dnAttributes to set. |
| */ |
| public void setDnAttributes( boolean dnAttributes ) |
| { |
| this.dnAttributes = dnAttributes; |
| } |
| |
| |
| /** |
| * Get the matchingRule |
| * |
| * @return Returns the matchingRule. |
| */ |
| public String getMatchingRule() |
| { |
| return matchingRule; |
| } |
| |
| |
| /** |
| * Set the matchingRule |
| * |
| * @param matchingRule The matchingRule to set. |
| */ |
| public void setMatchingRule( String matchingRule ) |
| { |
| this.matchingRule = matchingRule; |
| } |
| |
| |
| /** |
| * Get the matchValue |
| * |
| * @return Returns the matchValue. |
| */ |
| public Value getMatchValue() |
| { |
| return matchValue; |
| } |
| |
| |
| /** |
| * Set the matchValue |
| * |
| * @param matchValue The matchValue to set. |
| */ |
| public void setMatchValue( Value matchValue ) |
| { |
| this.matchValue = matchValue; |
| } |
| |
| |
| /** |
| * Get the type |
| * |
| * @return Returns the type. |
| */ |
| public String getType() |
| { |
| return type; |
| } |
| |
| |
| /** |
| * Set the type |
| * |
| * @param type The type to set. |
| */ |
| public void setType( String type ) |
| { |
| this.type = type; |
| } |
| |
| |
| /** |
| * get the expectedMatchingRuleLength |
| * |
| * @return Returns the expectedMatchingRuleLength. |
| */ |
| public int getExpectedMatchingRuleLength() |
| { |
| return expectedMatchingRuleLength; |
| } |
| |
| |
| /** |
| * Set the expectedMatchingRuleLength |
| * |
| * @param expectedMatchingRuleLength The expectedMatchingRuleLength to set. |
| */ |
| public void setExpectedMatchingRuleLength( int expectedMatchingRuleLength ) |
| { |
| this.expectedMatchingRuleLength = expectedMatchingRuleLength; |
| } |
| |
| |
| /** |
| * Compute the ExtensibleMatchFilter length |
| * <br> |
| * ExtensibleMatchFilter : |
| * <pre> |
| * 0xA9 L1 |
| * | |
| * [+--> 0x81 L3 matchingRule] |
| * [+--> 0x82 L4 type] |
| * [+--> 0x83 L5 matchValue] |
| * [+--> 0x01 0x01 dnAttributes] |
| * </pre> |
| * |
| * @return The encoded length |
| */ |
| @Override |
| public int computeLength() |
| { |
| if ( matchingRule != null ) |
| { |
| matchingRuleBytes = Strings.getBytesUtf8( matchingRule ); |
| extensibleMatchLength = 1 + TLV.getNbBytes( matchingRuleBytes.length ) + matchingRuleBytes.length; |
| } |
| |
| if ( type != null ) |
| { |
| typeBytes = Strings.getBytesUtf8( type ); |
| extensibleMatchLength += 1 + TLV.getNbBytes( typeBytes.length ) + typeBytes.length; |
| } |
| |
| if ( matchValue != null ) |
| { |
| int bytesLength = matchValue.getBytes().length; |
| extensibleMatchLength += 1 + TLV.getNbBytes( bytesLength ) + bytesLength; |
| } |
| |
| if ( dnAttributes ) |
| { |
| extensibleMatchLength += 1 + 1 + 1; |
| } |
| |
| return 1 + TLV.getNbBytes( extensibleMatchLength ) + extensibleMatchLength; |
| } |
| |
| |
| /** |
| * Encode the ExtensibleMatch Filters to a PDU. |
| * <br> |
| * ExtensibleMatch filter : |
| * <pre> |
| * 0xA9 LL |
| * | 0x81 LL matchingRule |
| * | / | 0x82 LL Type |
| * | / | /0x83 LL matchValue |
| * +--+ +-+ |
| * | \ \ |
| * | \ 0x83 LL MatchValue |
| * | 0x82 LL type |
| * | 0x83 LL matchValue |
| * +--[0x84 0x01 dnAttributes] |
| * </pre> |
| * |
| * @param buffer The buffer where to put the PDU |
| * @return The PDU. |
| */ |
| @Override |
| public ByteBuffer encode( ByteBuffer buffer ) throws EncoderException |
| { |
| if ( buffer == null ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_08000_CANNOT_PUT_A_PDU_IN_NULL_BUFFER ) ); |
| } |
| |
| try |
| { |
| // The ExtensibleMatch Tag |
| buffer.put( ( byte ) LdapCodecConstants.EXTENSIBLE_MATCH_FILTER_TAG ); |
| buffer.put( TLV.getBytes( extensibleMatchLength ) ); |
| |
| if ( ( matchingRule == null ) && ( type == null ) ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_05500_NULL_MATCHING_RULE_AND_TYPE ) ); |
| } |
| |
| // The matching rule |
| if ( matchingRule != null ) |
| { |
| buffer.put( ( byte ) LdapCodecConstants.MATCHING_RULE_ID_TAG ); |
| buffer.put( TLV.getBytes( matchingRuleBytes.length ) ); |
| buffer.put( matchingRuleBytes ); |
| } |
| |
| // The type |
| if ( type != null ) |
| { |
| buffer.put( ( byte ) LdapCodecConstants.MATCHING_RULE_TYPE_TAG ); |
| buffer.put( TLV.getBytes( typeBytes.length ) ); |
| buffer.put( typeBytes ); |
| } |
| |
| // The match value |
| if ( matchValue != null ) |
| { |
| buffer.put( ( byte ) LdapCodecConstants.MATCH_VALUE_TAG ); |
| |
| byte[] bytes = matchValue.getBytes(); |
| int bytesLength = bytes.length; |
| buffer.put( TLV.getBytes( bytesLength ) ); |
| |
| if ( bytesLength != 0 ) |
| { |
| buffer.put( bytes ); |
| } |
| |
| } |
| |
| // The dnAttributes flag, if true only |
| if ( dnAttributes ) |
| { |
| buffer.put( ( byte ) LdapCodecConstants.DN_ATTRIBUTES_FILTER_TAG ); |
| buffer.put( ( byte ) 1 ); |
| buffer.put( BerValue.TRUE_VALUE ); |
| } |
| } |
| catch ( BufferOverflowException boe ) |
| { |
| throw new EncoderException( I18n.err( I18n.ERR_08212_PDU_BUFFER_TOO_SMALL ), boe ); |
| } |
| |
| return buffer; |
| } |
| |
| |
| /** |
| * Return a String representing an extended filter as of RFC 2254 |
| * |
| * @return An Extended Filter String |
| */ |
| @Override |
| public String toString() |
| { |
| |
| StringBuilder sb = new StringBuilder(); |
| |
| if ( type != null ) |
| { |
| sb.append( type ); |
| } |
| |
| if ( dnAttributes ) |
| { |
| sb.append( ":dn" ); |
| } |
| |
| if ( matchingRule == null ) |
| { |
| |
| if ( type == null ) |
| { |
| return "Extended Filter wrong syntax"; |
| } |
| } |
| else |
| { |
| sb.append( ':' ).append( matchingRule ); |
| } |
| |
| sb.append( ":=" ).append( matchValue ); |
| |
| return sb.toString(); |
| } |
| } |