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/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

/**
* @author Vladimir N. Molotkov, Alexander Y. Kleymenov
* @version $Revision$
*/

package org.apache.harmony.security.x509;

import java.io.IOException;
import java.math.BigInteger;
import org.apache.harmony.security.asn1.ASN1Implicit;
import org.apache.harmony.security.asn1.ASN1Integer;
import org.apache.harmony.security.asn1.ASN1Sequence;
import org.apache.harmony.security.asn1.ASN1Type;
import org.apache.harmony.security.asn1.BerInputStream;

/**
 * The class encapsulates the ASN.1 DER encoding/decoding work
 * with PolicyConstraints structure which is a part of X.509 certificate
 * (as specified in RFC 3280 -
 *  Internet X.509 Public Key Infrastructure.
 *  Certificate and Certificate Revocation List (CRL) Profile.
 *  http://www.ietf.org/rfc/rfc3280.txt):
 *
 * 
 *
 *  PolicyConstraints ::= SEQUENCE {
 *       requireExplicitPolicy           [0] SkipCerts OPTIONAL,
 *       inhibitPolicyMapping            [1] SkipCerts OPTIONAL }
 *
 *  SkipCerts ::= INTEGER (0..MAX)
 *
 * 
* * TODO: This class is not fully implemented. * * @see org.apache.harmony.security.x509.GeneralSubtree * @see org.apache.harmony.security.x509.GeneralName */ public final class PolicyConstraints extends ExtensionValue { /** the value of requireExplicitPolicy field of the structure */ private final BigInteger requireExplicitPolicy; /** the value of inhibitPolicyMapping field of the structure */ private final BigInteger inhibitPolicyMapping; /** the ASN.1 encoded form of PolicyConstraints */ private byte[] encoding; public PolicyConstraints(BigInteger requireExplicitPolicy, BigInteger inhibitPolicyMapping) { this.requireExplicitPolicy = requireExplicitPolicy; this.inhibitPolicyMapping = inhibitPolicyMapping; } public PolicyConstraints(byte[] encoding) throws IOException { super(encoding); PolicyConstraints pc = (PolicyConstraints) ASN1.decode(encoding); this.requireExplicitPolicy = pc.requireExplicitPolicy; this.inhibitPolicyMapping = pc.inhibitPolicyMapping; } private PolicyConstraints(BigInteger requireExplicitPolicy, BigInteger inhibitPolicyMapping, byte[] encoding) { this(requireExplicitPolicy, inhibitPolicyMapping); this.encoding = encoding; } /** * Returns ASN.1 encoded form of this X.509 PolicyConstraints value. */ @Override public byte[] getEncoded() { if (encoding == null) { encoding = ASN1.encode(this); } return encoding; } @Override public void dumpValue(StringBuilder sb, String prefix) { sb.append(prefix).append("PolicyConstraints: [\n"); if (requireExplicitPolicy != null) { sb.append(prefix).append(" requireExplicitPolicy: ").append(requireExplicitPolicy).append('\n'); } if (inhibitPolicyMapping != null) { sb.append(prefix).append(" inhibitPolicyMapping: ").append(inhibitPolicyMapping).append('\n'); } sb.append(prefix).append("]\n"); } /** * X.509 PolicyConstraints encoder/decoder. */ public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] { new ASN1Implicit(0, ASN1Integer.getInstance()), new ASN1Implicit(1, ASN1Integer.getInstance()) }) { { setOptional(0); setOptional(1); } @Override protected Object getDecodedObject(BerInputStream in) { Object[] values = (Object[]) in.content; BigInteger requireExplicitPolicy = null; BigInteger inhibitPolicyMapping = null; if (values[0] != null) { requireExplicitPolicy = new BigInteger((byte[]) values[0]); } if (values[1] != null) { inhibitPolicyMapping = new BigInteger((byte[]) values[1]); } return new PolicyConstraints( requireExplicitPolicy, inhibitPolicyMapping, in.getEncoded()); } @Override protected void getValues(Object object, Object[] values) { PolicyConstraints pc = (PolicyConstraints) object; values[0] = pc.requireExplicitPolicy.toByteArray(); values[1] = pc.inhibitPolicyMapping.toByteArray(); } }; }




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