/*
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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 2006-2009 Sun Microsystems, Inc.
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* Portions Copyright 2013-2014 Manuel Gaupp
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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.io.ByteArrayInputStream;
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import java.io.InputStream;
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import java.math.BigInteger;
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import java.security.cert.CertificateException;
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import java.security.cert.CertificateFactory;
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import java.security.cert.X509Certificate;
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import javax.security.auth.x500.X500Principal;
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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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import java.util.Collection;
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import java.util.Collections;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.api.EqualityMatchingRule;
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import org.opends.server.core.DirectoryServer;
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import org.forgerock.i18n.slf4j.LocalizedLogger;
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import org.opends.server.protocols.asn1.GSERException;
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import org.opends.server.protocols.asn1.GSERParser;
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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.forgerock.opendj.ldap.ByteStringBuilder;
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import org.opends.server.types.DN;
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import org.opends.server.types.DirectoryException;
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import org.opends.server.types.ResultCode;
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import org.opends.server.util.StaticUtils;
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/**
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* This class implements the certificateExactMatch matching rule defined
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* in X.509 and referenced in RFC 4523.
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*/
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class CertificateExactMatchingRule
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extends EqualityMatchingRule
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{
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/**
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* The GSER identifier for the serialNumber named value.
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*/
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private static final String GSER_ID_SERIALNUMBER = "serialNumber";
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/**
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* The GSER identifier for the issuer named value.
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*/
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private static final String GSER_ID_ISSUER = "issuer";
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/**
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* The GSER identifier for the rdnSequence IdentifiedChoiceValue.
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*/
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private static final String GSER_ID_RDNSEQUENCE = "rdnSequence";
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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 certificateExactMatch matching rule.
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*/
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public CertificateExactMatchingRule()
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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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public Collection<String> getAllNames()
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{
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return Collections.singleton(getName());
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}
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/**
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* Retrieves the common name for this matching rule.
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*
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* @return The common name for this matching rule, or <CODE>null</CODE> if
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* it does not have a name.
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*/
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public String getName()
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{
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return EMR_CERTIFICATE_EXACT_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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public String getOID()
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{
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return EMR_CERTIFICATE_EXACT_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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public String getDescription()
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{
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return EMR_CERTIFICATE_EXACT_DESCRIPTION;
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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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public String getSyntaxOID()
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{
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return SYNTAX_CERTIFICATE_EXACT_ASSERTION_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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public ByteString normalizeValue(ByteSequence value)
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throws DirectoryException
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{
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// The normalized form of this value is the GSER encoded ....
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final BigInteger serialNumber;
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final String dnstring;
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String certificateIssuer;
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// Read the X.509 Certificate and extract serialNumber and issuerDN
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try
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{
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CertificateFactory certFactory = CertificateFactory.getInstance("X.509");
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InputStream inputStream = new ByteArrayInputStream(value.toByteArray());
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X509Certificate certValue = (X509Certificate) certFactory
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.generateCertificate(inputStream);
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serialNumber = certValue.getSerialNumber();
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X500Principal issuer = certValue.getIssuerX500Principal();
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dnstring = issuer.getName(X500Principal.RFC2253);
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}
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catch (CertificateException ce)
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{
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// There seems to be a problem while parsing the certificate.
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logger.trace(WARN_CERTIFICATE_MATCH_PARSE_ERROR.get(ce.getMessage()));
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// return the raw bytes as a fall back
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return value.toByteString();
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}
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// Normalize the DN
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try
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{
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DN dn = DN.valueOf(dnstring);
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certificateIssuer = dn.toNormalizedString();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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// We couldn't normalize the DN for some reason. If we're supposed to use
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// strict syntax enforcement, then throw an exception. Otherwise, log a
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// message and just try our best.
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_INVALID_DN.get(
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dnstring, getExceptionMessage(e));
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switch (DirectoryServer.getSyntaxEnforcementPolicy())
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{
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case REJECT:
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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case WARN:
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logger.error(message);
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certificateIssuer= toLowerCase(dnstring);
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break;
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default:
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certificateIssuer= toLowerCase(dnstring);
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break;
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}
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}
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// Create the encoded value
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return createEncodedValue(serialNumber,certificateIssuer);
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}
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/**
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* {@inheritDoc}
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*/
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public ByteString normalizeAssertionValue(ByteSequence value)
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throws DirectoryException
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{
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// validate and normalize the GSER structure
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// according to the definitions from RFC 4523, Appendix A.1
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final BigInteger serialNumber;
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final String dnstring;
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String certificateIssuer;
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final GSERParser parser;
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String identifier;
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parser = new GSERParser(value.toString());
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try
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{
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// the String starts with a sequence
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parser.readStartSequence();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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// Assume the assertion value is a certificate and parse issuer and serial
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// number. If the value is not even a certificate then the raw bytes will
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// be returned.
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return normalizeValue(value);
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}
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try
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{
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// the first namedValue is serialNumber
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identifier = parser.nextNamedValueIdentifier();
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if (!identifier.equals(GSER_ID_SERIALNUMBER))
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{
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_IDENTIFIER_NOT_FOUND
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.get(GSER_ID_SERIALNUMBER);
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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}
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// The value for the serialNumber
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serialNumber = parser.nextBigInteger();
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// separator
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parser.skipSeparator();
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// the next namedValue is issuer
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identifier = parser.nextNamedValueIdentifier();
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if (!identifier.equals(GSER_ID_ISSUER))
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{
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_IDENTIFIER_NOT_FOUND
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.get(GSER_ID_ISSUER);
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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}
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// expecting "rdnSequence:"
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identifier = parser.nextChoiceValueIdentifier();
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if (!identifier.equals(GSER_ID_RDNSEQUENCE))
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{
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_IDENTIFIER_NOT_FOUND
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.get(GSER_ID_RDNSEQUENCE);
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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}
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// now the issuer dn
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dnstring = parser.nextString();
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// Closing the Sequence
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parser.readEndSequence();
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// There should not be additional characters
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if (parser.hasNext())
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{
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_EXPECTED_END.get();
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switch (DirectoryServer.getSyntaxEnforcementPolicy())
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{
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case REJECT:
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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case WARN:
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logger.error(message);
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break;
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}
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}
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}
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catch (GSERException e)
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{
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_GSER_INVALID.get(
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getExceptionMessage(e));
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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}
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// Normalize the DN
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try
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{
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DN dn = DN.valueOf(dnstring);
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certificateIssuer = dn.toNormalizedString();
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}
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catch (Exception e)
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{
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logger.traceException(e);
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// We couldn't normalize the DN for some reason. If we're supposed to use
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// strict syntax enforcement, then throw an exception. Otherwise, log a
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// message and just try our best.
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LocalizableMessage message = ERR_CERTIFICATE_MATCH_INVALID_DN.get(
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dnstring, getExceptionMessage(e));
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switch (DirectoryServer.getSyntaxEnforcementPolicy())
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{
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case REJECT:
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throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX,
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message);
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case WARN:
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logger.error(message);
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certificateIssuer= toLowerCase(dnstring);
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break;
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default:
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certificateIssuer= toLowerCase(dnstring);
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break;
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}
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}
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// Create the encoded value
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return createEncodedValue(serialNumber,certificateIssuer);
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}
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/**
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* Creates the value containing serialNumber and issuer DN.
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*
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* @param serial the serialNumber
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* @param issuerDN the issuer DN String
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*
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* @return the encoded ByteString
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*/
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private static ByteString createEncodedValue(BigInteger serial,
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String issuerDN)
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{
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ByteStringBuilder builder = new ByteStringBuilder();
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builder.append(StaticUtils.getBytes(issuerDN));
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builder.append((byte) 0); // Separator
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builder.append(serial.toByteArray());
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return builder.toByteString();
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}
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}
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