org.xipki.security.api.p11.remote.SlotIdentifier.java Source code

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Here is the source code for org.xipki.security.api.p11.remote.SlotIdentifier.java

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/*
 *
 * This file is part of the XiPKI project.
 * Copyright (c) 2014 - 2015 Lijun Liao
 * Author: Lijun Liao
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * THE AUTHOR LIJUN LIAO. LIJUN LIAO DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the XiPKI software without
 * disclosing the source code of your own applications.
 *
 * For more information, please contact Lijun Liao at this
 * address: lijun.liao@gmail.com
 */

package org.xipki.security.api.p11.remote;

import java.io.IOException;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.xipki.security.api.p11.P11SlotIdentifier;

/**
 *
 * <pre>
 * SlotIdentifier ::= SEQUENCE
 * {
 *     slotIndex   INTEGER OPTIONAL, -- At least one of slotIndex and slotId must present.
 *     slotId      [1] EXPLICIT INTEGER OPTIONAL
 * }
 * </pre>
 *
 * @author Lijun Liao
 */

public class SlotIdentifier extends ASN1Object {
    private P11SlotIdentifier slotId;

    public SlotIdentifier(final P11SlotIdentifier slotId) {
        if (slotId == null) {
            throw new IllegalArgumentException("slotId could not be null");
        }

        this.slotId = slotId;
    }

    private SlotIdentifier(final ASN1Sequence seq) {
        int size = seq.size();
        if (size < 1) {
            throw new IllegalArgumentException("wrong number of elements in sequence");
        }

        Integer slotIndex = null;

        ASN1Encodable slotIdASN1Obj = null;
        ASN1Encodable obj = seq.getObjectAt(0);
        if (obj instanceof ASN1Integer) {
            slotIndex = ((ASN1Integer) obj).getPositiveValue().intValue();
            if (size > 1) {
                slotIdASN1Obj = seq.getObjectAt(1);
            }
        } else {
            slotIdASN1Obj = obj;
        }

        Long slotId = null;

        if (slotIdASN1Obj instanceof ASN1TaggedObject) {
            ASN1TaggedObject tagObj = (ASN1TaggedObject) slotIdASN1Obj;

            int tagNo = tagObj.getTagNo();
            if (tagNo == 1) {
                ASN1Integer i = ASN1Integer.getInstance(tagObj.getObject());
                slotId = i.getPositiveValue().longValue();
            } else {
                throw new IllegalArgumentException("unknown tag " + tagNo);
            }
        }

        this.slotId = new P11SlotIdentifier(slotIndex, slotId);
    }

    public static SlotIdentifier getInstance(final Object obj) {
        if (obj == null || obj instanceof SlotIdentifier) {
            return (SlotIdentifier) obj;
        }

        if (obj instanceof ASN1Sequence) {
            return new SlotIdentifier((ASN1Sequence) obj);
        }

        if (obj instanceof byte[]) {
            try {
                return getInstance(ASN1Primitive.fromByteArray((byte[]) obj));
            } catch (IOException e) {
                throw new IllegalArgumentException("unable to parse encoded general name");
            }
        }

        throw new IllegalArgumentException("unknown object in getInstance: " + obj.getClass().getName());
    }

    @Override
    public ASN1Primitive toASN1Primitive() {
        ASN1EncodableVector vector = new ASN1EncodableVector();
        if (slotId.getSlotIndex() != null) {
            vector.add(new ASN1Integer(slotId.getSlotIndex()));
        }

        if (slotId.getSlotId() != null) {
            DERTaggedObject taggedObj = new DERTaggedObject(true, 1, new ASN1Integer(slotId.getSlotId()));
            vector.add(taggedObj);
        }

        return new DERSequence(vector);
    }

    public P11SlotIdentifier getSlotId() {
        return slotId;
    }

}