/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2008 Sun Microsystems, Inc.
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* Portions Copyright 2014 ForgeRock AS
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*/
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package org.opends.server.authorization.dseecompat;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.types.*;
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import org.forgerock.opendj.ldap.ByteString;
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import static org.opends.messages.SchemaMessages.*;
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import static org.opends.messages.AccessControlMessages.*;
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import static org.opends.server.util.StaticUtils.isDigit;
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import static org.opends.server.util.StaticUtils.isHexDigit;
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import static org.opends.server.util.StaticUtils.hexStringToByteArray;
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import org.forgerock.util.Reject;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* This class is used to encapsulate DN pattern matching using wildcards.
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* The following wildcard uses are supported.
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*
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* Value substring: Any number of wildcards may appear in RDN attribute
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* values where they match zero or more characters, just like substring filters:
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* uid=b*jensen*
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*
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* Whole-Type: A single wildcard may also be used to match any RDN attribute
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* type, and the wildcard in this case may be omitted as a shorthand:
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* *=bjensen
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* bjensen
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*
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* Whole-RDN. A single wildcard may be used to match exactly one RDN component
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* (which may be single or multi-valued):
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* *,dc=example,dc=com
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*
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* Multiple-Whole-RDN: A double wildcard may be used to match one or more
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* RDN components:
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* uid=bjensen,**,dc=example,dc=com
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*
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*/
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public class PatternDN
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/**
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* If the pattern did not include any Multiple-Whole-RDN wildcards, then
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* this is the sequence of RDN patterns in the DN pattern. Otherwise it
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* is null.
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*/
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PatternRDN[] equality = null;
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/**
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* If the pattern included any Multiple-Whole-RDN wildcards, then these
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* are the RDN pattern sequences that appear between those wildcards.
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*/
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PatternRDN[] subInitial = null;
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List<PatternRDN[]> subAnyElements = null;
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PatternRDN[] subFinal = null;
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/**
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* When there is no initial sequence, this is used to distinguish between
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* the case where we have a suffix pattern (zero or more RDN components
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* allowed before matching elements) and the case where it is not a
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* suffix pattern but the pattern started with a Multiple-Whole-RDN wildcard
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* (one or more RDN components allowed before matching elements).
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*/
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boolean isSuffix = false;
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/**
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* Create a DN pattern that does not include any Multiple-Whole-RDN wildcards.
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* @param equality The sequence of RDN patterns making up the DN pattern.
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*/
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private PatternDN(PatternRDN[] equality)
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{
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this.equality = equality;
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}
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/**
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* Create a DN pattern that includes Multiple-Whole-RDN wildcards.
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* @param subInitial The sequence of RDN patterns appearing at the
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* start of the DN, or null if there are none.
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* @param subAnyElements The list of sequences of RDN patterns appearing
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* in order anywhere in the DN.
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* @param subFinal The sequence of RDN patterns appearing at the
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* end of the DN, or null if there are none.
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*/
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private PatternDN(PatternRDN[] subInitial,
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List<PatternRDN[]> subAnyElements,
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PatternRDN[] subFinal)
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{
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Reject.ifNull(subAnyElements);
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this.subInitial = subInitial;
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this.subAnyElements = subAnyElements;
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this.subFinal = subFinal;
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}
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/**
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* Determine whether a given DN matches this pattern.
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* @param dn The DN to be matched.
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* @return true if the DN matches the pattern.
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*/
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public boolean matchesDN(DN dn)
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{
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if (equality != null)
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{
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// There are no Multiple-Whole-RDN wildcards in the pattern.
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if (equality.length != dn.size())
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{
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return false;
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}
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for (int i = 0; i < dn.size(); i++)
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{
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if (!equality[i].matchesRDN(dn.getRDN(i)))
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{
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return false;
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}
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}
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return true;
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}
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else
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{
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// There are Multiple-Whole-RDN wildcards in the pattern.
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int valueLength = dn.size();
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int pos = 0;
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if (subInitial != null)
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{
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int initialLength = subInitial.length;
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if (initialLength > valueLength)
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{
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return false;
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}
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for (; pos < initialLength; pos++)
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{
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if (!subInitial[pos].matchesRDN(dn.getRDN(pos)))
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{
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return false;
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}
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}
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pos++;
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}
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else
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{
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if (!isSuffix)
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{
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pos++;
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}
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}
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if ((subAnyElements != null) && (! subAnyElements.isEmpty()))
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{
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for (PatternRDN[] element : subAnyElements)
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{
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int anyLength = element.length;
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int end = valueLength - anyLength;
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boolean match = false;
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for (; pos < end; pos++)
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{
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if (element[0].matchesRDN(dn.getRDN(pos)))
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{
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boolean subMatch = true;
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for (int i=1; i < anyLength; i++)
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{
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if (!element[i].matchesRDN(dn.getRDN(pos+i)))
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{
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subMatch = false;
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break;
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}
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}
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if (subMatch)
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{
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match = subMatch;
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break;
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}
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}
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}
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if (match)
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{
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pos += anyLength + 1;
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}
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else
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{
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return false;
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}
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}
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}
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if (subFinal != null)
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{
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int finalLength = subFinal.length;
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if ((valueLength - finalLength) < pos)
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{
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return false;
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}
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pos = valueLength - finalLength;
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for (int i=0; i < finalLength; i++,pos++)
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{
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if (!subFinal[i].matchesRDN(dn.getRDN(pos)))
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{
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return false;
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}
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}
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}
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return pos <= valueLength;
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}
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}
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/**
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* Create a new DN pattern matcher to match a suffix.
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* @param pattern The suffix pattern string.
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* @throws org.opends.server.types.DirectoryException If the pattern string
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* is not valid.
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* @return A new DN pattern matcher.
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*/
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public static PatternDN decodeSuffix(String pattern)
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throws DirectoryException
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{
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// Parse the user supplied pattern.
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PatternDN patternDN = decode(pattern);
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// Adjust the pattern so that it matches any DN ending with the pattern.
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if (patternDN.equality != null)
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{
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// The pattern contained no Multiple-Whole-RDN wildcards,
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// so we just convert the whole thing into a final fragment.
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patternDN.subInitial = null;
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patternDN.subFinal = patternDN.equality;
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patternDN.subAnyElements = null;
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patternDN.equality = null;
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}
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else if (patternDN.subInitial != null)
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{
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// The pattern had an initial fragment so we need to convert that into
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// the head of the list of any elements.
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patternDN.subAnyElements.add(0, patternDN.subInitial);
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patternDN.subInitial = null;
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}
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patternDN.isSuffix = true;
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return patternDN;
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}
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/**
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* Create a new DN pattern matcher from a pattern string.
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* @param dnString The DN pattern string.
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* @throws org.opends.server.types.DirectoryException If the pattern string
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* is not valid.
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* @return A new DN pattern matcher.
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*/
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public static PatternDN decode(String dnString)
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throws DirectoryException
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{
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ArrayList<PatternRDN> rdnComponents = new ArrayList<PatternRDN>();
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ArrayList<Integer> doubleWildPos = new ArrayList<Integer>();
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// A null or empty DN is acceptable.
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if (dnString == null)
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{
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return new PatternDN(new PatternRDN[0]);
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}
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int length = dnString.length();
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if (length == 0)
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{
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return new PatternDN(new PatternRDN[0]);
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}
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// Iterate through the DN string. The first thing to do is to get
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// rid of any leading spaces.
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int pos = 0;
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char c = dnString.charAt(pos);
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while (c == ' ')
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{
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pos++;
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if (pos == length)
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{
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// This means that the DN was completely comprised of spaces
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// and therefore should be considered the same as a null or
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// empty DN.
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return new PatternDN(new PatternRDN[0]);
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}
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else
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{
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c = dnString.charAt(pos);
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}
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}
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// We know that it's not an empty DN, so we can do the real
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// processing. Create a loop and iterate through all the RDN
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// components.
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rdnLoop:
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while (true)
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{
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int attributePos = pos;
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StringBuilder attributeName = new StringBuilder();
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pos = parseAttributePattern(dnString, pos, attributeName);
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String name = attributeName.toString();
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// Make sure that we're not at the end of the DN string because
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// that would be invalid.
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if (pos >= length)
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{
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if (name.equals("*"))
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{
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rdnComponents.add(new PatternRDN(name, null, dnString));
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break;
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}
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else if (name.equals("**"))
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{
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doubleWildPos.add(rdnComponents.size());
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break;
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}
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else
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{
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pos = attributePos - 1;
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name = "*";
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c = '=';
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}
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}
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else
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{
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// Skip over any spaces between the attribute name and its
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// value.
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c = dnString.charAt(pos);
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while (c == ' ')
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{
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pos++;
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if (pos >= length)
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{
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if (name.equals("*"))
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{
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rdnComponents.add(new PatternRDN(name, null, dnString));
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break rdnLoop;
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}
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else if (name.equals("**"))
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{
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doubleWildPos.add(rdnComponents.size());
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break rdnLoop;
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}
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else
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{
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pos = attributePos - 1;
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name = "*";
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c = '=';
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}
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}
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else
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{
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c = dnString.charAt(pos);
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}
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}
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}
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if (c == '=')
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{
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pos++;
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}
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else if ((c == ',' || c == ';'))
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{
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if (name.equals("*"))
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{
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rdnComponents.add(new PatternRDN(name, null, dnString));
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pos++;
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continue;
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}
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else if (name.equals("**"))
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{
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doubleWildPos.add(rdnComponents.size());
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pos++;
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continue;
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}
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else
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{
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pos = attributePos;
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name = "*";
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}
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}
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else
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{
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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ERR_ATTR_SYNTAX_DN_NO_EQUAL.get(dnString, attributeName, c));
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}
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// Skip over any spaces after the equal sign.
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while ((pos < length) && (dnString.charAt(pos) == ' '))
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{
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pos++;
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}
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// If we are at the end of the DN string, then that must mean
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// that the attribute value was empty. This will probably never
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// happen in a real-world environment, but technically isn't
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// illegal. If it does happen, then go ahead and create the
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// RDN component and return the DN.
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if (pos >= length)
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{
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ArrayList<ByteString> arrayList = new ArrayList<ByteString>(1);
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arrayList.add(ByteString.empty());
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rdnComponents.add(new PatternRDN(name, arrayList, dnString));
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break;
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}
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// Parse the value for this RDN component.
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ArrayList<ByteString> parsedValue = new ArrayList<ByteString>();
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pos = parseValuePattern(dnString, pos, parsedValue);
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// Create the new RDN with the provided information.
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PatternRDN rdn = new PatternRDN(name, parsedValue, dnString);
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// Skip over any spaces that might be after the attribute value.
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while ((pos < length) && ((c = dnString.charAt(pos)) == ' '))
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{
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pos++;
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}
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// Most likely, we will be at either the end of the RDN
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// component or the end of the DN. If so, then handle that
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// appropriately.
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if (pos >= length)
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{
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// We're at the end of the DN string and should have a valid
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// DN so return it.
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rdnComponents.add(rdn);
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break;
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}
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else if ((c == ',') || (c == ';'))
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{
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// We're at the end of the RDN component, so add it to the
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// list, skip over the comma/semicolon, and start on the next
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// component.
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rdnComponents.add(rdn);
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pos++;
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continue;
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}
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else if (c != '+')
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{
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// This should not happen. At any rate, it's an illegal
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// character, so throw an exception.
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LocalizableMessage message = ERR_ATTR_SYNTAX_DN_INVALID_CHAR.get(dnString, c, pos);
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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message);
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}
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// If we have gotten here, then this must be a multi-valued RDN.
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// In that case, parse the remaining attribute/value pairs and
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// add them to the RDN that we've already created.
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while (true)
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{
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// Skip over the plus sign and any spaces that may follow it
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// before the next attribute name.
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pos++;
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while ((pos < length) && (dnString.charAt(pos) == ' '))
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{
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pos++;
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}
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// Parse the attribute name from the DN string.
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attributeName = new StringBuilder();
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pos = parseAttributePattern(dnString, pos, attributeName);
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// Make sure that we're not at the end of the DN string
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// because that would be invalid.
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if (pos >= length)
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{
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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ERR_ATTR_SYNTAX_DN_END_WITH_ATTR_NAME.get(dnString, attributeName));
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}
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name = attributeName.toString();
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// Skip over any spaces between the attribute name and its
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// value.
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c = dnString.charAt(pos);
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while (c == ' ')
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{
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pos++;
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if (pos >= length)
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{
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// This means that we hit the end of the value before
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// finding a '='. This is illegal because there is no
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// attribute-value separator.
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LocalizableMessage message =
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ERR_ATTR_SYNTAX_DN_END_WITH_ATTR_NAME.get(dnString, name);
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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message);
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}
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else
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{
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c = dnString.charAt(pos);
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}
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}
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// The next character must be an equal sign. If it is not,
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// then that's an error.
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if (c == '=')
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{
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pos++;
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}
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else
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{
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LocalizableMessage message = ERR_ATTR_SYNTAX_DN_NO_EQUAL.get(dnString, name, c);
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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message);
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}
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// Skip over any spaces after the equal sign.
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while ((pos < length) && ((c = dnString.charAt(pos)) == ' '))
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{
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pos++;
|
}
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|
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// If we are at the end of the DN string, then that must mean
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// that the attribute value was empty. This will probably
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// never happen in a real-world environment, but technically
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// isn't illegal. If it does happen, then go ahead and create
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// the RDN component and return the DN.
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if (pos >= length)
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{
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ArrayList<ByteString> arrayList = new ArrayList<ByteString>(1);
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arrayList.add(ByteString.empty());
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rdn.addValue(name, arrayList, dnString);
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rdnComponents.add(rdn);
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break;
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}
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// Parse the value for this RDN component.
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parsedValue = new ArrayList<ByteString>();
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pos = parseValuePattern(dnString, pos, parsedValue);
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// Create the new RDN with the provided information.
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rdn.addValue(name, parsedValue, dnString);
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|
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// Skip over any spaces that might be after the attribute
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// value.
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while ((pos < length) && ((c = dnString.charAt(pos)) == ' '))
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{
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pos++;
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}
|
|
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// Most likely, we will be at either the end of the RDN
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// component or the end of the DN. If so, then handle that
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// appropriately.
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if (pos >= length)
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{
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// We're at the end of the DN string and should have a valid
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// DN so return it.
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rdnComponents.add(rdn);
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break;
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}
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else if ((c == ',') || (c == ';'))
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{
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// We're at the end of the RDN component, so add it to the
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// list, skip over the comma/semicolon, and start on the
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// next component.
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rdnComponents.add(rdn);
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pos++;
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break;
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}
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else if (c != '+')
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{
|
// This should not happen. At any rate, it's an illegal
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// character, so throw an exception.
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LocalizableMessage message =
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ERR_ATTR_SYNTAX_DN_INVALID_CHAR.get(dnString, c, pos);
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throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
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message);
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}
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}
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}
|
|
if (doubleWildPos.isEmpty())
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{
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PatternRDN[] patterns = new PatternRDN[rdnComponents.size()];
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patterns = rdnComponents.toArray(patterns);
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return new PatternDN(patterns);
|
}
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else
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{
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PatternRDN[] subInitial = null;
|
PatternRDN[] subFinal = null;
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List<PatternRDN[]> subAnyElements = new ArrayList<PatternRDN[]>();
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int i = 0;
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int numComponents = rdnComponents.size();
|
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int to = doubleWildPos.get(i);
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if (to != 0)
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{
|
// Initial piece.
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subInitial = new PatternRDN[to];
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subInitial = rdnComponents.subList(0, to).toArray(subInitial);
|
}
|
|
int from;
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for (; i < doubleWildPos.size() - 1; i++)
|
{
|
from = doubleWildPos.get(i);
|
to = doubleWildPos.get(i+1);
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PatternRDN[] subAny = new PatternRDN[to-from];
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subAny = rdnComponents.subList(from, to).toArray(subAny);
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subAnyElements.add(subAny);
|
}
|
|
if (i < doubleWildPos.size())
|
{
|
from = doubleWildPos.get(i);
|
if (from != numComponents)
|
{
|
// Final piece.
|
subFinal = new PatternRDN[numComponents-from];
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subFinal = rdnComponents.subList(from, numComponents).
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toArray(subFinal);
|
}
|
}
|
|
return new PatternDN(subInitial, subAnyElements, subFinal);
|
}
|
}
|
|
|
/**
|
* Parses an attribute name pattern from the provided DN pattern string
|
* starting at the specified location.
|
*
|
* @param dnString The DN pattern string to be parsed.
|
* @param pos The position at which to start parsing
|
* the attribute name pattern.
|
* @param attributeName The buffer to which to append the parsed
|
* attribute name pattern.
|
*
|
* @return The position of the first character that is not part of
|
* the attribute name pattern.
|
*
|
* @throws DirectoryException If it was not possible to parse a
|
* valid attribute name pattern from the
|
* provided DN pattern string.
|
*/
|
static int parseAttributePattern(String dnString, int pos,
|
StringBuilder attributeName)
|
throws DirectoryException
|
{
|
int length = dnString.length();
|
|
|
// Skip over any leading spaces.
|
if (pos < length)
|
{
|
while (dnString.charAt(pos) == ' ')
|
{
|
pos++;
|
if (pos == length)
|
{
|
// This means that the remainder of the DN was completely
|
// comprised of spaces. If we have gotten here, then we
|
// know that there is at least one RDN component, and
|
// therefore the last non-space character of the DN must
|
// have been a comma. This is not acceptable.
|
LocalizableMessage message = ERR_ATTR_SYNTAX_DN_END_WITH_COMMA.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
}
|
}
|
|
// Next, we should find the attribute name for this RDN component.
|
boolean checkForOID = false;
|
boolean endOfName = false;
|
while (pos < length)
|
{
|
// To make the switch more efficient, we'll include all ASCII
|
// characters in the range of allowed values and then reject the
|
// ones that aren't allowed.
|
char c = dnString.charAt(pos);
|
switch (c)
|
{
|
case ' ':
|
// This should denote the end of the attribute name.
|
endOfName = true;
|
break;
|
|
|
case '!':
|
case '"':
|
case '#':
|
case '$':
|
case '%':
|
case '&':
|
case '\'':
|
case '(':
|
case ')':
|
// None of these are allowed in an attribute name or any
|
// character immediately following it.
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case '*':
|
// Wildcard character.
|
attributeName.append(c);
|
break;
|
|
case '+':
|
// None of these are allowed in an attribute name or any
|
// character immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case ',':
|
// This should denote the end of the attribute name.
|
endOfName = true;
|
break;
|
|
case '-':
|
// This will be allowed as long as it isn't the first
|
// character in the attribute name.
|
if (attributeName.length() > 0)
|
{
|
attributeName.append(c);
|
}
|
else
|
{
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_INITIAL_DASH.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
break;
|
|
|
case '.':
|
// The period could be allowed if the attribute name is
|
// actually expressed as an OID. We'll accept it for now,
|
// but make sure to check it later.
|
attributeName.append(c);
|
checkForOID = true;
|
break;
|
|
|
case '/':
|
// This is not allowed in an attribute name or any character
|
// immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case '0':
|
case '1':
|
case '2':
|
case '3':
|
case '4':
|
case '5':
|
case '6':
|
case '7':
|
case '8':
|
case '9':
|
// Digits are always allowed if they are not the first
|
// character. However, they may be allowed if they are the
|
// first character if the valid is an OID or if the
|
// attribute name exceptions option is enabled. Therefore,
|
// we'll accept it now and check it later.
|
attributeName.append(c);
|
break;
|
|
|
case ':':
|
// Not allowed in an attribute name or any
|
// character immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case ';': // NOTE: attribute options are not allowed in a DN.
|
// This should denote the end of the attribute name.
|
endOfName = true;
|
break;
|
|
case '<':
|
// None of these are allowed in an attribute name or any
|
// character immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case '=':
|
// This should denote the end of the attribute name.
|
endOfName = true;
|
break;
|
|
|
case '>':
|
case '?':
|
case '@':
|
// None of these are allowed in an attribute name or any
|
// character immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case 'A':
|
case 'B':
|
case 'C':
|
case 'D':
|
case 'E':
|
case 'F':
|
case 'G':
|
case 'H':
|
case 'I':
|
case 'J':
|
case 'K':
|
case 'L':
|
case 'M':
|
case 'N':
|
case 'O':
|
case 'P':
|
case 'Q':
|
case 'R':
|
case 'S':
|
case 'T':
|
case 'U':
|
case 'V':
|
case 'W':
|
case 'X':
|
case 'Y':
|
case 'Z':
|
// These will always be allowed.
|
attributeName.append(c);
|
break;
|
|
|
case '[':
|
case '\\':
|
case ']':
|
case '^':
|
// None of these are allowed in an attribute name or any
|
// character immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case '_':
|
attributeName.append(c);
|
break;
|
|
|
case '`':
|
// This is not allowed in an attribute name or any character
|
// immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
|
|
case 'a':
|
case 'b':
|
case 'c':
|
case 'd':
|
case 'e':
|
case 'f':
|
case 'g':
|
case 'h':
|
case 'i':
|
case 'j':
|
case 'k':
|
case 'l':
|
case 'm':
|
case 'n':
|
case 'o':
|
case 'p':
|
case 'q':
|
case 'r':
|
case 's':
|
case 't':
|
case 'u':
|
case 'v':
|
case 'w':
|
case 'x':
|
case 'y':
|
case 'z':
|
// These will always be allowed.
|
attributeName.append(c);
|
break;
|
|
|
default:
|
// This is not allowed in an attribute name or any character
|
// immediately following it.
|
message =
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_CHAR.get(dnString, c, pos);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
|
|
if (endOfName)
|
{
|
break;
|
}
|
|
pos++;
|
}
|
|
|
// We should now have the full attribute name. However, we may
|
// still need to perform some validation, particularly if the
|
// name contains a period or starts with a digit. It must also
|
// have at least one character.
|
if (attributeName.length() == 0)
|
{
|
LocalizableMessage message = ERR_ATTR_SYNTAX_DN_ATTR_NO_NAME.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
else if (checkForOID)
|
{
|
boolean validOID = true;
|
|
int namePos = 0;
|
int nameLength = attributeName.length();
|
char ch = attributeName.charAt(0);
|
if ((ch == 'o') || (ch == 'O'))
|
{
|
if (nameLength <= 4)
|
{
|
validOID = false;
|
}
|
else
|
{
|
if ((((ch = attributeName.charAt(1)) == 'i') ||
|
(ch == 'I')) &&
|
(((ch = attributeName.charAt(2)) == 'd') ||
|
(ch == 'D')) &&
|
(attributeName.charAt(3) == '.'))
|
{
|
attributeName.delete(0, 4);
|
nameLength -= 4;
|
}
|
else
|
{
|
validOID = false;
|
}
|
}
|
}
|
|
while (validOID && (namePos < nameLength))
|
{
|
ch = attributeName.charAt(namePos++);
|
if (isDigit(ch))
|
{
|
while (validOID && (namePos < nameLength) &&
|
isDigit(attributeName.charAt(namePos)))
|
{
|
namePos++;
|
}
|
|
if ((namePos < nameLength) &&
|
(attributeName.charAt(namePos) != '.'))
|
{
|
validOID = false;
|
}
|
}
|
else if (ch == '.')
|
{
|
if ((namePos == 1) ||
|
(attributeName.charAt(namePos-2) == '.'))
|
{
|
validOID = false;
|
}
|
}
|
else
|
{
|
validOID = false;
|
}
|
}
|
|
|
if (validOID && (attributeName.charAt(nameLength-1) == '.'))
|
{
|
validOID = false;
|
}
|
|
if (! validOID)
|
{
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
ERR_ATTR_SYNTAX_DN_ATTR_ILLEGAL_PERIOD.get(dnString, attributeName));
|
}
|
}
|
|
return pos;
|
}
|
|
|
/**
|
* Parses the attribute value pattern from the provided DN pattern
|
* string starting at the specified location. The value is split up
|
* according to the wildcard locations, and the fragments are inserted
|
* into the provided list.
|
*
|
* @param dnString The DN pattern string to be parsed.
|
* @param pos The position of the first character in
|
* the attribute value pattern to parse.
|
* @param attributeValues The list whose elements should be set to
|
* the parsed attribute value fragments when
|
* this method completes successfully.
|
*
|
* @return The position of the first character that is not part of
|
* the attribute value.
|
*
|
* @throws DirectoryException If it was not possible to parse a
|
* valid attribute value pattern from the
|
* provided DN string.
|
*/
|
static private int parseValuePattern(String dnString, int pos,
|
ArrayList<ByteString> attributeValues)
|
throws DirectoryException
|
{
|
// All leading spaces have already been stripped so we can start
|
// reading the value. However, it may be empty so check for that.
|
int length = dnString.length();
|
if (pos >= length)
|
{
|
return pos;
|
}
|
|
|
// Look at the first character. If it is an octothorpe (#), then
|
// that means that the value should be a hex string.
|
char c = dnString.charAt(pos++);
|
if (c == '#')
|
{
|
// The first two characters must be hex characters.
|
StringBuilder hexString = new StringBuilder();
|
if ((pos+2) > length)
|
{
|
LocalizableMessage message = ERR_ATTR_SYNTAX_DN_HEX_VALUE_TOO_SHORT.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
|
for (int i=0; i < 2; i++)
|
{
|
c = dnString.charAt(pos++);
|
if (isHexDigit(c))
|
{
|
hexString.append(c);
|
}
|
else
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_INVALID_HEX_DIGIT.get(dnString, c);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
}
|
|
|
// The rest of the value must be a multiple of two hex
|
// characters. The end of the value may be designated by the
|
// end of the DN, a comma or semicolon, or a space.
|
while (pos < length)
|
{
|
c = dnString.charAt(pos++);
|
if (isHexDigit(c))
|
{
|
hexString.append(c);
|
|
if (pos < length)
|
{
|
c = dnString.charAt(pos++);
|
if (isHexDigit(c))
|
{
|
hexString.append(c);
|
}
|
else
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_INVALID_HEX_DIGIT.get(dnString, c);
|
throw new DirectoryException(
|
ResultCode.INVALID_DN_SYNTAX, message);
|
}
|
}
|
else
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_HEX_VALUE_TOO_SHORT.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
}
|
else if ((c == ' ') || (c == ',') || (c == ';'))
|
{
|
// This denotes the end of the value.
|
pos--;
|
break;
|
}
|
else
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_INVALID_HEX_DIGIT.get(dnString, c);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
}
|
|
|
// At this point, we should have a valid hex string. Convert it
|
// to a byte array and set that as the value of the provided
|
// octet string.
|
try
|
{
|
byte[] bytes = hexStringToByteArray(hexString.toString());
|
attributeValues.add(ByteString.wrap(bytes));
|
return pos;
|
}
|
catch (Exception e)
|
{
|
logger.traceException(e);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
ERR_ATTR_SYNTAX_DN_ATTR_VALUE_DECODE_FAILURE.get(dnString, e));
|
}
|
}
|
|
|
// If the first character is a quotation mark, then the value
|
// should continue until the corresponding closing quotation mark.
|
else if (c == '"')
|
{
|
// Keep reading until we find an unescaped closing quotation
|
// mark.
|
boolean escaped = false;
|
StringBuilder valueString = new StringBuilder();
|
while (true)
|
{
|
if (pos >= length)
|
{
|
// We hit the end of the DN before the closing quote.
|
// That's an error.
|
LocalizableMessage message = ERR_ATTR_SYNTAX_DN_UNMATCHED_QUOTE.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
|
c = dnString.charAt(pos++);
|
if (escaped)
|
{
|
// The previous character was an escape, so we'll take this
|
// one no matter what.
|
valueString.append(c);
|
escaped = false;
|
}
|
else if (c == '\\')
|
{
|
// The next character is escaped. Set a flag to denote
|
// this, but don't include the backslash.
|
escaped = true;
|
}
|
else if (c == '"')
|
{
|
// This is the end of the value.
|
break;
|
}
|
else
|
{
|
// This is just a regular character that should be in the
|
// value.
|
valueString.append(c);
|
}
|
}
|
|
attributeValues.add(ByteString.valueOf(valueString.toString()));
|
return pos;
|
}
|
|
|
// Otherwise, use general parsing to find the end of the value.
|
else
|
{
|
boolean escaped;
|
StringBuilder valueString = new StringBuilder();
|
StringBuilder hexChars = new StringBuilder();
|
|
if (c == '\\')
|
{
|
escaped = true;
|
}
|
else if (c == '*')
|
{
|
escaped = false;
|
attributeValues.add(ByteString.valueOf(valueString.toString()));
|
}
|
else
|
{
|
escaped = false;
|
valueString.append(c);
|
}
|
|
|
// Keep reading until we find an unescaped comma or plus sign or
|
// the end of the DN.
|
while (true)
|
{
|
if (pos >= length)
|
{
|
// This is the end of the DN and therefore the end of the
|
// value. If there are any hex characters, then we need to
|
// deal with them accordingly.
|
appendHexChars(dnString, valueString, hexChars);
|
break;
|
}
|
|
c = dnString.charAt(pos++);
|
if (escaped)
|
{
|
// The previous character was an escape, so we'll take this
|
// one. However, this could be a hex digit, and if that's
|
// the case then the escape would actually be in front of
|
// two hex digits that should be treated as a special
|
// character.
|
if (isHexDigit(c))
|
{
|
// It is a hexadecimal digit, so the next digit must be
|
// one too. However, this could be just one in a series
|
// of escaped hex pairs that is used in a string
|
// containing one or more multi-byte UTF-8 characters so
|
// we can't just treat this byte in isolation. Collect
|
// all the bytes together and make sure to take care of
|
// these hex bytes before appending anything else to the
|
// value.
|
if (pos >= length)
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_ESCAPED_HEX_VALUE_INVALID.get(dnString);
|
throw new DirectoryException(
|
ResultCode.INVALID_DN_SYNTAX, message);
|
}
|
else
|
{
|
char c2 = dnString.charAt(pos++);
|
if (isHexDigit(c2))
|
{
|
hexChars.append(c);
|
hexChars.append(c2);
|
}
|
else
|
{
|
LocalizableMessage message =
|
ERR_ATTR_SYNTAX_DN_ESCAPED_HEX_VALUE_INVALID.get(dnString);
|
throw new DirectoryException(
|
ResultCode.INVALID_DN_SYNTAX, message);
|
}
|
}
|
}
|
else
|
{
|
appendHexChars(dnString, valueString, hexChars);
|
valueString.append(c);
|
}
|
|
escaped = false;
|
}
|
else if (c == '\\')
|
{
|
escaped = true;
|
}
|
else if ((c == ',') || (c == ';'))
|
{
|
appendHexChars(dnString, valueString, hexChars);
|
pos--;
|
break;
|
}
|
else if (c == '+')
|
{
|
appendHexChars(dnString, valueString, hexChars);
|
pos--;
|
break;
|
}
|
else if (c == '*')
|
{
|
appendHexChars(dnString, valueString, hexChars);
|
if (valueString.length() == 0)
|
{
|
LocalizableMessage message =
|
WARN_PATTERN_DN_CONSECUTIVE_WILDCARDS_IN_VALUE.get(dnString);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
message);
|
}
|
attributeValues.add(ByteString.valueOf(valueString.toString()));
|
valueString = new StringBuilder();
|
hexChars = new StringBuilder();
|
}
|
else
|
{
|
appendHexChars(dnString, valueString, hexChars);
|
valueString.append(c);
|
}
|
}
|
|
|
// Strip off any unescaped spaces that may be at the end of the
|
// value.
|
if (pos > 2 && dnString.charAt(pos-1) == ' ' &&
|
dnString.charAt(pos-2) != '\\')
|
{
|
int lastPos = valueString.length() - 1;
|
while (lastPos > 0)
|
{
|
if (valueString.charAt(lastPos) == ' ')
|
{
|
valueString.delete(lastPos, lastPos+1);
|
lastPos--;
|
}
|
else
|
{
|
break;
|
}
|
}
|
}
|
|
|
attributeValues.add(ByteString.valueOf(valueString.toString()));
|
return pos;
|
}
|
}
|
|
|
/**
|
* Decodes a hexadecimal string from the provided
|
* <CODE>hexChars</CODE> buffer, converts it to a byte array, and
|
* then converts that to a UTF-8 string. The resulting UTF-8 string
|
* will be appended to the provided <CODE>valueString</CODE> buffer,
|
* and the <CODE>hexChars</CODE> buffer will be cleared.
|
*
|
* @param dnString The DN string that is being decoded.
|
* @param valueString The buffer containing the value to which the
|
* decoded string should be appended.
|
* @param hexChars The buffer containing the hexadecimal
|
* characters to decode to a UTF-8 string.
|
*
|
* @throws DirectoryException If any problem occurs during the
|
* decoding process.
|
*/
|
private static void appendHexChars(String dnString,
|
StringBuilder valueString,
|
StringBuilder hexChars)
|
throws DirectoryException
|
{
|
try
|
{
|
byte[] hexBytes = hexStringToByteArray(hexChars.toString());
|
valueString.append(new String(hexBytes, "UTF-8"));
|
hexChars.delete(0, hexChars.length());
|
}
|
catch (Exception e)
|
{
|
logger.traceException(e);
|
throw new DirectoryException(ResultCode.INVALID_DN_SYNTAX,
|
ERR_ATTR_SYNTAX_DN_ATTR_VALUE_DECODE_FAILURE.get(dnString, e));
|
}
|
}
|
}
|
