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package org.bouncycastle.asn1.cmc;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;

/**
 * ExtendedFailInfo ::= SEQUENCE {
 * failInfoOID            OBJECT IDENTIFIER,
 * failInfoValue          ANY DEFINED BY failInfoOID
 * }
 */
public class ExtendedFailInfo
    extends ASN1Object
{

    private final ASN1ObjectIdentifier failInfoOID;
    private final ASN1Encodable failInfoValue;

    public ExtendedFailInfo(ASN1ObjectIdentifier failInfoOID, ASN1Encodable failInfoValue)
    {
        this.failInfoOID = failInfoOID;
        this.failInfoValue = failInfoValue;
    }

    private ExtendedFailInfo(ASN1Sequence s)
    {
        if (s.size() != 2)
        {
            throw new IllegalArgumentException("Sequence must be 2 elements.");
        }

        failInfoOID = ASN1ObjectIdentifier.getInstance(s.getObjectAt(0));
        failInfoValue = s.getObjectAt(1);
    }

    public static ExtendedFailInfo getInstance(Object obj)
    {
        if (obj instanceof ExtendedFailInfo)
        {
            return (ExtendedFailInfo)obj;
        }

        if (obj instanceof ASN1Encodable)
        {
            ASN1Encodable asn1Value = ((ASN1Encodable)obj).toASN1Primitive();
            if (asn1Value instanceof ASN1Sequence)
            {
                return new ExtendedFailInfo(
                    (ASN1Sequence)asn1Value
                );
            }
        }
        else if (obj instanceof byte[])
        {
            return getInstance(ASN1Sequence.getInstance(obj));
        }

        return null;
    }

    public ASN1Primitive toASN1Primitive()
    {
        return new DERSequence(new ASN1Encodable[]{failInfoOID, failInfoValue});
    }

    public ASN1ObjectIdentifier getFailInfoOID()
    {
        return failInfoOID;
    }

    public ASN1Encodable getFailInfoValue()
    {
        return failInfoValue;
    }
}