android-platform-libcore/luni/src/main/java/org/apache/harmony/security/asn1/ASN1OpenType.java

/*
 *  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 Stepan M. Mishura
* @version $Revision$
*/

package org.apache.harmony.security.asn1;

import java.io.IOException;
import org.apache.harmony.security.x501.AttributeType;



/**
 * Represents ASN.1 open type that is defined by Oid
 *
 * @see <a href="http://asn1.elibel.tm.fr/en/standards/index.htm">ASN.1</a>
 */

public class ASN1OpenType extends ASN1Any {

    private final Id key;

    private final InformationObjectSet pool;

    public ASN1OpenType(Id key, InformationObjectSet pool) {
        this.key = key;
        this.pool = pool;
    }

    public Object decode(BerInputStream in) throws IOException {

        int[] oid = (int[]) in.get(key);
        if (oid == null) {
            throw new RuntimeException("");//FIXME message & type
        }

        AttributeType attr = (AttributeType) pool.get(oid);
        if (attr == null || (!attr.type.checkTag(in.tag))) {
            in.content = (byte[]) super.getDecodedObject(in);
        } else {
            in.content = attr.type.decode(in);
        }
        return in.content;
    }

    public Object getDecodedObject(BerInputStream in) throws IOException {
        return in.content;
    }

    public static class Id extends ASN1Oid {

        public Object decode(BerInputStream in) throws IOException {
            Object oid = super.decode(in);

            if (oid == null) {
                in.put(this, super.getDecodedObject(in));
            } else {
                in.put(this, oid);
            }
            return oid;
        }

        public Object getDecodedObject(BerInputStream in) throws IOException {
            return in.get(this);
        }
    }
}