org.jnotary.dvcs.Data.java Source code

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Here is the source code for org.jnotary.dvcs.Data.java

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/*******************************************************************************
 * Copyright (c) 2013 aib.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     aib - initial API and implementation
 ******************************************************************************/
package org.jnotary.dvcs;

import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.DigestInfo;

/*
Data ::= CHOICE {
message           OCTET STRING ,
messageImprint    DigestInfo,
certs             SEQUENCE SIZE (1..MAX) OF
                      TargetEtcChain
}
*/
public class Data extends ASN1Object implements ASN1Choice {
    private DEROctetString message = null; // OCTET STRING
    private DigestInfo messageImprint = null; // DigestInfo,
    private TargetEtcChain[] certs = null; // SEQUENCE SIZE (1..MAX) OF TargetEtcChain

    public Data(DEROctetString message) {
        this.message = message;
    }

    public Data(DigestInfo messageImprint) {
        this.messageImprint = messageImprint;
    }

    public Data(TargetEtcChain[] certs) {
        this.certs = certs;
    }

    @Override
    public ASN1Primitive toASN1Primitive() {
        if (message != null)
            return message.toASN1Primitive();
        if (messageImprint != null)
            return messageImprint.toASN1Primitive();
        if (certs != null) {
            ASN1EncodableVector seq = new ASN1EncodableVector();
            for (int i = 0; i < certs.length; i++) {
                seq.add(certs[i]);
            }
            return new DERSequence(seq).toASN1Primitive();
        }
        return null;
    }

    private TargetEtcChain[] copyChain(TargetEtcChain[] src) {
        TargetEtcChain[] res = new TargetEtcChain[src.length];
        for (int i = 0; i < src.length; ++i)
            res[i] = src[i];
        return res;
    }

    public DEROctetString getMessage() {
        return message;
    }

    public DigestInfo getMessageImprint() {
        return messageImprint;
    }

    public TargetEtcChain[] getCerts() {
        return certs;
    }

    private Data(ASN1Sequence seq) {
        certs = new TargetEtcChain[seq.size()];
        for (int i = 0; i < seq.size(); ++i) {
            certs[i] = TargetEtcChain.getInstance(seq.getObjectAt(i));
        }
    }

    public static Data getInstance(int serviceType, Object obj) {
        switch (serviceType) {
        case ServiceType.CPD:
        case ServiceType.VSD:
            return new Data((DEROctetString) DEROctetString.getInstance(obj));
        case ServiceType.CCPD:
            return new Data(DigestInfo.getInstance(obj));
        case ServiceType.VPKC:
            return new Data(DERSequence.getInstance(obj));
        }

        return null;
    }
}