package org.bouncycastle.asn1.cms;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.BERSequence;
import org.bouncycastle.asn1.BERTaggedObject;
public class ContentInfo
extends ASN1Object
implements CMSObjectIdentifiers
{
private ASN1ObjectIdentifier contentType;
private ASN1Encodable content;
public static ContentInfo getInstance(
Object obj)
{
if (obj instanceof ContentInfo)
{
return (ContentInfo)obj;
}
else if (obj != null)
{
return new ContentInfo(ASN1Sequence.getInstance(obj));
}
return null;
}
public static ContentInfo getInstance(
ASN1TaggedObject obj,
boolean explicit)
{
return getInstance(ASN1Sequence.getInstance(obj, explicit));
}
/**
* @deprecated use getInstance()
*/
public ContentInfo(
ASN1Sequence seq)
{
if (seq.size() < 1 || seq.size() > 2)
{
throw new IllegalArgumentException("Bad sequence size: " + seq.size());
}
contentType = (ASN1ObjectIdentifier)seq.getObjectAt(0);
if (seq.size() > 1)
{
ASN1TaggedObject tagged = (ASN1TaggedObject)seq.getObjectAt(1);
if (!tagged.isExplicit() || tagged.getTagNo() != 0)
{
throw new IllegalArgumentException("Bad tag for 'content'");
}
content = tagged.getObject();
}
}
public ContentInfo(
ASN1ObjectIdentifier contentType,
ASN1Encodable content)
{
this.contentType = contentType;
this.content = content;
}
public ASN1ObjectIdentifier getContentType()
{
return contentType;
}
public ASN1Encodable getContent()
{
return content;
}
/**
* Produce an object suitable for an ASN1OutputStream.
* <pre>
* ContentInfo ::= SEQUENCE {
* contentType ContentType,
* content
* [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL }
* </pre>
*/
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(contentType);
if (content != null)
{
v.add(new BERTaggedObject(0, content));
}
return new BERSequence(v);
}
}