/*
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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 2006-2008 Sun Microsystems, Inc.
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* Portions Copyright 2014 ForgeRock AS
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*/
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package org.opends.server.schema;
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import java.util.Collection;
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import java.util.Collections;
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import org.forgerock.i18n.LocalizableMessageBuilder;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.forgerock.opendj.ldap.ByteSequence;
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import org.forgerock.opendj.ldap.ByteString;
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import org.opends.server.api.EqualityMatchingRule;
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import org.opends.server.api.MatchingRule;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.types.*;
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import static org.opends.messages.SchemaMessages.*;
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import static org.opends.server.schema.SchemaConstants.*;
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import static org.opends.server.util.StaticUtils.*;
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/**
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* This class defines the objectIdentifierMatch matching rule defined in X.520
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* and referenced in RFC 2252. This expects to work on OIDs and will match
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* either an attribute/objectclass name or a numeric OID.
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*/
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class ObjectIdentifierEqualityMatchingRule
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extends EqualityMatchingRule
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{
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private static final LocalizedLogger logger = LocalizedLogger.getLoggerForThisClass();
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/**
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* Creates a new instance of this objectIdentifierMatch matching rule.
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*/
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public ObjectIdentifierEqualityMatchingRule()
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{
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super();
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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public Collection<String> getNames()
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{
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return Collections.singleton(EMR_OID_NAME);
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}
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/**
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* Retrieves the OID for this matching rule.
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*
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* @return The OID for this matching rule.
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*/
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@Override
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public String getOID()
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{
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return EMR_OID_OID;
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}
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/**
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* Retrieves the description for this matching rule.
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*
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* @return The description for this matching rule, or <CODE>null</CODE> if
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* there is none.
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*/
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@Override
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public String getDescription()
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{
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// There is no standard description for this matching rule.
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return null;
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}
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/**
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* Retrieves the OID of the syntax with which this matching rule is
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* associated.
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*
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* @return The OID of the syntax with which this matching rule is associated.
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*/
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@Override
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public String getSyntaxOID()
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{
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return SYNTAX_OID_OID;
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}
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/**
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* Retrieves the normalized form of the provided value, which is best suited
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* for efficiently performing matching operations on that value.
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*
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* @param value The value to be normalized.
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*
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* @return The normalized version of the provided value.
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*
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* @throws DirectoryException If the provided value is invalid according to
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* the associated attribute syntax.
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*/
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@Override
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public ByteString normalizeValue(ByteSequence value)
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throws DirectoryException
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{
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StringBuilder buffer = new StringBuilder();
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toLowerCase(value, buffer, true);
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String lowerValue = buffer.toString();
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// Normalize OIDs into schema names, and secondary schema names into
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// primary schema names.
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String schemaName = null;
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AttributeType attributeType = DirectoryServer.getAttributeType(lowerValue);
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if (attributeType != null)
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{
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schemaName = attributeType.getNameOrOID();
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}
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if (schemaName == null)
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{
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ObjectClass objectClass = DirectoryServer.getObjectClass(lowerValue);
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if (objectClass != null)
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{
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schemaName = objectClass.getNameOrOID();
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}
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}
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if (schemaName == null)
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{
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MatchingRule matchingRule = DirectoryServer.getMatchingRule(lowerValue);
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if (matchingRule != null)
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{
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schemaName = matchingRule.getNameOrOID();
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}
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}
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if (schemaName == null)
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{
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NameForm nameForm = DirectoryServer.getNameForm(lowerValue);
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if (nameForm != null)
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{
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schemaName = nameForm.getNameOrOID();
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}
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}
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if (schemaName != null)
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{
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return ByteString.valueOf(toLowerCase(schemaName));
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}
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// There were no schema matches so we must check the syntax.
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switch (DirectoryServer.getSyntaxEnforcementPolicy())
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{
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case REJECT:
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LocalizableMessageBuilder invalidReason = new LocalizableMessageBuilder();
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if (isValidSchemaElement(lowerValue, 0, lowerValue.length(),
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invalidReason))
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{
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return ByteString.valueOf(lowerValue);
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}
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else
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{
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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ERR_ATTR_SYNTAX_OID_INVALID_VALUE.get(
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lowerValue, invalidReason));
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}
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case WARN:
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invalidReason = new LocalizableMessageBuilder();
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if (! isValidSchemaElement(lowerValue, 0, lowerValue.length(),
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invalidReason))
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{
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logger.error(ERR_ATTR_SYNTAX_OID_INVALID_VALUE, lowerValue, invalidReason);
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}
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return ByteString.valueOf(lowerValue);
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default:
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return ByteString.valueOf(lowerValue);
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}
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}
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/**
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* Indicates whether the two provided normalized values are equal to each
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* other.
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*
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* @param value1 The normalized form of the first value to compare.
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* @param value2 The normalized form of the second value to compare.
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*
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* @return <CODE>true</CODE> if the provided values are equal, or
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* <CODE>false</CODE> if not.
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*/
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@Override
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public boolean areEqual(ByteSequence value1, ByteSequence value2)
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{
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// First, compare the normalized values to see if they are the same.
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if (value1.equals(value2))
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{
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return true;
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}
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// The following code implies that the normalized values cannot be
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// compared byte-for-byte, which would require that the generateHashCode
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// method of EqualityMatchingRule be overridden to avoid using the
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// normalized value. Instead, values are now normalized such that they
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// can be compared byte-for-byte. There are still some rare cases where
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// comparison fails. For example, say there is an object class with primary
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// name "a" and secondary name "b", and there is also an attribute type with
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// primary name "b". In this case comparing "a" with "b" returns false even
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// though the two values are equivalent in an object class context.
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/*
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// It is possible that they are different names referring to the same
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// schema element. See if we can find a case where that is true in the
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// server configuration for all of the following schema element types:
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// - Attribute Types
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// - Objectclasses
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// - Attribute syntaxes
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// - Matching Rules
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// - Name Forms
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String valueStr1 = value1.stringValue();
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AttributeType attrType1 = DirectoryServer.getAttributeType(valueStr1);
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if (attrType1 != null)
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{
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String valueStr2 = value2.stringValue();
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AttributeType attrType2 = DirectoryServer.getAttributeType(valueStr2);
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if (attrType2 == null)
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{
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return false;
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}
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else
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{
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return attrType1.equals(attrType2);
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}
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}
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ObjectClass oc1 = DirectoryServer.getObjectClass(valueStr1);
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if (oc1 != null)
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{
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String valueStr2 = value2.stringValue();
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ObjectClass oc2 = DirectoryServer.getObjectClass(valueStr2);
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if (oc2 == null)
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{
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return false;
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}
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else
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{
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return oc1.equals(oc2);
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}
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}
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AttributeSyntax syntax1 = DirectoryServer.getAttributeSyntax(valueStr1,
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false);
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if (syntax1 != null)
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{
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String valueStr2 = value2.stringValue();
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AttributeSyntax syntax2 = DirectoryServer.getAttributeSyntax(valueStr2,
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false);
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if (syntax2 == null)
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{
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return false;
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}
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else
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{
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return syntax1.equals(syntax2);
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}
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}
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MatchingRule mr1 = DirectoryServer.getMatchingRule(valueStr1);
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if (mr1 != null)
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{
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String valueStr2 = value2.stringValue();
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MatchingRule mr2 = DirectoryServer.getMatchingRule(valueStr2);
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if (mr2 == null)
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{
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return false;
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}
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else
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{
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return mr1.equals(mr2);
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}
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}
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NameForm nf1 = DirectoryServer.getNameForm(valueStr1);
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if (nf1 != null)
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{
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String valueStr2 = value2.stringValue();
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NameForm nf2 = DirectoryServer.getNameForm(valueStr2);
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if (nf2 == null)
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{
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return false;
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}
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else
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{
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return nf1.equals(nf2);
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}
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}
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*/
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// If we've gotten here, then we've exhausted all reasonable checking and
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// we can't consider them equal.
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return false;
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}
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}
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