org.bouncycastle.asn1.cms.MetaData Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of bcutil-jdk15to18 Show documentation
The Bouncy Castle Java APIs for ASN.1 extension and utility APIs used to support bcpkix and bctls. This jar contains APIs for JDK 1.5 to JDK 1.8.
There is a newer version: 1.78.1
Show newest version
package org.bouncycastle.asn1.cms;

import org.bouncycastle.asn1.ASN1Boolean;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1IA5String;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1UTF8String;
import org.bouncycastle.asn1.DERIA5String;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERUTF8String;

/**
 * RFC 5544:
 * Binding Documents with Time-Stamps; MetaData object.
 * 
 * 
 * MetaData ::= SEQUENCE {
 *   hashProtected        BOOLEAN,
 *   fileName             UTF8String OPTIONAL,
 *   mediaType            IA5String OPTIONAL,
 *   otherMetaData        Attributes OPTIONAL
 * }
 * 
 */
public class MetaData
    extends ASN1Object
{
    private ASN1Boolean hashProtected;
    private ASN1UTF8String fileName;
    private ASN1IA5String  mediaType;
    private Attributes otherMetaData;

    public MetaData(
        ASN1Boolean hashProtected,
        ASN1UTF8String fileName,
        ASN1IA5String mediaType,
        Attributes otherMetaData)
    {
        this.hashProtected = hashProtected;
        this.fileName = fileName;
        this.mediaType = mediaType;
        this.otherMetaData = otherMetaData;
    }

    private MetaData(ASN1Sequence seq)
    {
        this.hashProtected = ASN1Boolean.getInstance(seq.getObjectAt(0));

        int index = 1;

        if (index < seq.size() && seq.getObjectAt(index) instanceof ASN1UTF8String)
        {
            this.fileName = ASN1UTF8String.getInstance(seq.getObjectAt(index++));
        }
        if (index < seq.size() && seq.getObjectAt(index) instanceof ASN1IA5String)
        {
            this.mediaType = ASN1IA5String.getInstance(seq.getObjectAt(index++));
        }
        if (index < seq.size())
        {
            this.otherMetaData = Attributes.getInstance(seq.getObjectAt(index++));
        }
    }

    /**
     * Return a MetaData object from the given object.
     * 
     * Accepted inputs:
     * 

     *  null → null
     * 
 {@link MetaData} object
     * 
 {@link org.bouncycastle.asn1.ASN1Sequence#getInstance(java.lang.Object) ASN1Sequence} input formats with MetaData structure inside
     * 
     *
     * @param obj the object we want converted.
     * @exception IllegalArgumentException if the object cannot be converted.
     */
    public static MetaData getInstance(Object obj)
    {
        if (obj instanceof MetaData)
        {
            return (MetaData)obj;
        }
        else if (obj != null)
        {
            return new MetaData(ASN1Sequence.getInstance(obj));
        }

        return null;
    }

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector v = new ASN1EncodableVector(4);

        v.add(hashProtected);

        if (fileName != null)
        {
            v.add(fileName);
        }

        if (mediaType != null)
        {
            v.add(mediaType);
        }

        if (otherMetaData != null)
        {
            v.add(otherMetaData);
        }
        
        return new DERSequence(v);
    }

    public boolean isHashProtected()
    {
        return hashProtected.isTrue();
    }

    /**
     * @deprecated Use {@link #getFileNameUTF8()} instead.
     */
    public DERUTF8String getFileName()
    {
        return null == fileName || fileName instanceof DERUTF8String
            ?   (DERUTF8String)fileName
            :   new DERUTF8String(fileName.getString());
    }

    public ASN1UTF8String getFileNameUTF8()
    {
        return this.fileName;
    }

    /**
     * @deprecated Use {@link #getMediaTypeIA5()} instead.
     */
    public DERIA5String getMediaType()
    {
        return null == mediaType || mediaType instanceof DERIA5String
            ?   (DERIA5String)mediaType
            :   new DERIA5String(mediaType.getString(), false);
    }

    public ASN1IA5String getMediaTypeIA5()
    {
        return this.mediaType;
    }

    public Attributes getOtherMetaData()
    {
        return otherMetaData;
    }
}