/*
* 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 Alexander Y. Kleymenov
* @version $Revision$
*/
package org.apache.harmony.security.x509;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.apache.harmony.security.asn1.ASN1SequenceOf;
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 GeneralSubtrees 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>
* GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
* </pre>
*
* @see org.apache.harmony.security.x509.NameConstraints
* @see org.apache.harmony.security.x509.GeneralSubtree
*/
public final class GeneralSubtrees {
/** the list of values of GeneralSubtrees */
private List<GeneralSubtree> generalSubtrees;
/** the ASN.1 encoded form of GeneralSubtrees */
private byte[] encoding;
public GeneralSubtrees(List<GeneralSubtree> generalSubtrees) {
// TODO: the size should not be less than one
this.generalSubtrees = generalSubtrees;
}
/**
* Returns the list of values of subtrees.
*/
public List<GeneralSubtree> getSubtrees() {
return generalSubtrees;
}
/**
* Returns ASN.1 encoded form of this X.509 AlgorithmIdentifier value.
*/
public byte[] getEncoded() {
if (encoding == null) {
encoding = ASN1.encode(this);
}
return encoding;
}
/**
* ASN.1 DER X.509 GeneralSubtrees encoder/decoder class.
*/
public static final ASN1Type ASN1 = new ASN1SequenceOf(GeneralSubtree.ASN1) {
@Override public Object getDecodedObject(BerInputStream in) {
return new GeneralSubtrees((List<GeneralSubtree>) in.content);
}
@Override public Collection getValues(Object object) {
GeneralSubtrees gss = (GeneralSubtrees) object;
return (gss.generalSubtrees == null)
? new ArrayList<GeneralSubtree>()
: gss.generalSubtrees;
}
};
}