/*
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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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
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying 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 2009-2010 Sun Microsystems, Inc.
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*/
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package org.opends.sdk.schema;
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import java.util.TreeSet;
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import java.util.Iterator;
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import org.opends.sdk.*;
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import com.sun.opends.sdk.util.StaticUtils;
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import static com.sun.opends.sdk.util.StaticUtils.getBytes;
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/**
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* This class defines the distinguishedNameMatch matching rule defined in X.520
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* and referenced in RFC 2252.
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*/
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final class DistinguishedNameEqualityMatchingRuleImpl extends
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AbstractMatchingRuleImpl
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{
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/**
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* {@inheritDoc}
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*/
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public ByteString normalizeAttributeValue(final Schema schema,
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final ByteSequence value) throws DecodeException
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{
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try
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{
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DN dn = DN.valueOf(value.toString(), schema.nonStrict());
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StringBuilder builder = new StringBuilder(value.length());
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return ByteString.valueOf(normalizeDN(builder, dn));
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}
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catch (final LocalizedIllegalArgumentException e)
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{
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throw DecodeException.error(e.getMessageObject());
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}
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catch (final Exception e)
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{
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throw DecodeException.error(LocalizableMessage.raw(e.toString()));
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}
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}
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/**
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* Returns the normalized string representation of a DN.
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*
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* @param builder The StringBuilder to use to construct the normalized string.
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* @param dn The DN.
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* @return The normalized string representation of the provided DN.
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*/
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private static StringBuilder normalizeDN(final StringBuilder builder,
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final DN dn)
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{
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if(dn.rdn() == null)
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{
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return builder;
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}
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int i = dn.size() - 1;
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normalizeRDN(builder, dn.parent(i).rdn());
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for (i--; i >= 0; i--)
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{
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builder.append('\u0000');
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normalizeRDN(builder, dn.parent(i).rdn());
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}
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return builder;
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}
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/**
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* Returns the normalized string representation of a RDN.
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*
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* @param builder The StringBuilder to use to construct the normalized string.
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* @param rdn The RDN.
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* @return The normalized string representation of the provided RDN.
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*/
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private static StringBuilder normalizeRDN(final StringBuilder builder,
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final RDN rdn)
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{
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final int sz = rdn.size();
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if (sz == 1)
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{
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return normalizeAVA(builder, rdn.getFirstAVA());
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}
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else
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{
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// Need to sort the AVAs before comparing.
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TreeSet<AVA> a = new TreeSet<AVA>();
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for(AVA ava : rdn)
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{
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a.add(ava);
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}
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Iterator<AVA> i = a.iterator();
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// Normalize the first AVA.
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normalizeAVA(builder, i.next());
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while(i.hasNext())
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{
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builder.append('\u0001');
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normalizeAVA(builder, i.next());
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}
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return builder;
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}
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}
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/**
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* Returns the normalized string representation of an AVA.
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*
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* @param builder The StringBuilder to use to construct the normalized string.
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* @param ava The AVA.
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* @return The normalized string representation of the provided AVA.
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*/
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private static StringBuilder normalizeAVA(final StringBuilder builder,
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final AVA ava)
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{
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ByteString value = ava.getAttributeValue();
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final MatchingRule matchingRule =
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ava.getAttributeType().getEqualityMatchingRule();
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if (matchingRule != null)
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{
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try
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{
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value =
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matchingRule.normalizeAttributeValue(ava.getAttributeValue());
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}
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catch (final DecodeException de)
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{
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// Ignore - we'll drop back to the user provided value.
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}
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}
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if (!ava.getAttributeType().getNames().iterator().hasNext())
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{
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builder.append(ava.getAttributeType().getOID());
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builder.append("=#");
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StaticUtils.toHex(value, builder);
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}
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else
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{
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final String name = ava.getAttributeType().getNameOrOID();
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// Normalizing.
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StaticUtils.toLowerCase(name, builder);
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builder.append("=");
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final Syntax syntax = ava.getAttributeType().getSyntax();
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if (!syntax.isHumanReadable())
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{
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builder.append("#");
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StaticUtils.toHex(value, builder);
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}
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else
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{
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final String str = value.toString();
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if (str.length() == 0)
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{
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return builder;
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}
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char c = str.charAt(0);
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int startPos = 0;
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if ((c == ' ') || (c == '#'))
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{
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builder.append('\\');
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builder.append(c);
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startPos = 1;
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}
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final int length = str.length();
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for (int si = startPos; si < length; si++)
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{
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c = str.charAt(si);
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if (c < ' ')
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{
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for (final byte b : getBytes(String.valueOf(c)))
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{
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builder.append('\\');
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builder.append(StaticUtils.byteToLowerHex(b));
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}
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}
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else
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{
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if ((c == ' ' && si == length - 1)
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|| (c == '"' || c == '+' || c == ',' || c == ';' || c == '<'
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|| c == '=' || c == '>' || c == '\\' || c == '\u0000'))
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{
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builder.append('\\');
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}
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builder.append(c);
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}
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}
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}
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}
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return builder;
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}
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}
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