/*
* 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 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 the GeneralSubtree 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):
*
* <pre>
*
* GeneralSubtree ::= SEQUENCE {
* base GeneralName,
* minimum [0] BaseDistance DEFAULT 0,
* maximum [1] BaseDistance OPTIONAL }
*
* BaseDistance ::= INTEGER (0..MAX)
*
* </pre>
*
* @see org.apache.harmony.security.x509.NameConstraints
* @see org.apache.harmony.security.x509.GeneralName
*/
public final class GeneralSubtree {
/** the value of base field of the structure */
private final GeneralName base;
/** the value of minimum field of the structure */
private final int minimum;
/** the value of maximum field of the structure */
private final int maximum;
/** the ASN.1 encoded form of GeneralSubtree */
private byte[] encoding;
public GeneralSubtree(GeneralName base, int minimum, int maximum) {
this.base = base;
this.minimum = minimum;
this.maximum = maximum;
}
/**
* Returns the value of base field of the structure.
*/
public GeneralName getBase() {
return base;
}
/**
* Returns ASN.1 encoded form of this X.509 GeneralSubtree value.
*/
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(this);
}
return encoding;
}
public void dumpValue(StringBuilder sb, String prefix) {
sb.append(prefix).append("General Subtree: [\n");
sb.append(prefix).append(" base: ").append(base).append('\n');
sb.append(prefix).append(" minimum: ").append(minimum).append('\n');
if (maximum >= 0) {
sb.append(prefix).append(" maximum: ").append(maximum).append('\n');
}
sb.append(prefix).append("]\n");
}
/**
* ASN.1 DER X.509 GeneralSubtree encoder/decoder class.
*/
public static final ASN1Sequence ASN1 = new ASN1Sequence(new ASN1Type[] {
GeneralName.ASN1,
new ASN1Implicit(0, ASN1Integer.getInstance()),
new ASN1Implicit(1, ASN1Integer.getInstance()) }) {
{
setDefault(new byte[] {0}, 1); // minimum 0
setOptional(2); // maximum optional
}
@Override protected Object getDecodedObject(BerInputStream in) {
Object[] values = (Object[]) in.content;
int maximum = -1; // is optional maximum missing?
if (values[2] != null) {
maximum = ASN1Integer.toIntValue(values[2]); // no!
}
return new GeneralSubtree((GeneralName) values[0],
ASN1Integer.toIntValue(values[1]),
maximum);
}
@Override protected void getValues(Object object, Object[] values) {
GeneralSubtree gs = (GeneralSubtree) object;
values[0] = gs.base;
values[1] = ASN1Integer.fromIntValue(gs.minimum);
if (gs.maximum > -1) {
values[2] = ASN1Integer.fromIntValue(gs.maximum);
}
}
};
}