package org.bouncycastle.asn1.x509;
import java.math.BigInteger;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERInteger;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
public class GeneralSubtree
implements DEREncodable
{
private GeneralName base;
private DERInteger minimum;
private DERInteger maximum;
public GeneralSubtree(
ASN1Sequence seq)
{
base = GeneralName.getInstance(seq.getObjectAt(0));
switch (seq.size())
{
case 1:
break;
case 2:
ASN1TaggedObject o = (ASN1TaggedObject)seq.getObjectAt(1);
switch (o.getTagNo())
{
case 0 :
minimum = DERInteger.getInstance(o, false);
break;
case 1 :
maximum = DERInteger.getInstance(o, false);
break;
default:
throw new IllegalArgumentException("Bad tag number: " + o.getTagNo());
}
break;
case 3 :
minimum = DERInteger.getInstance((ASN1TaggedObject)seq.getObjectAt(1), false);
maximum = DERInteger.getInstance((ASN1TaggedObject)seq.getObjectAt(2), false);
break;
default:
throw new IllegalArgumentException("Bad sequence size: " + seq.size());
}
}
public static GeneralSubtree getInstance(
ASN1TaggedObject o,
boolean explicit)
{
return new GeneralSubtree(ASN1Sequence.getInstance(o, explicit));
}
public static GeneralSubtree getInstance(
Object obj)
{
if (obj == null)
{
return null;
}
if (obj instanceof GeneralSubtree)
{
return (GeneralSubtree)obj;
}
return new GeneralSubtree(ASN1Sequence.getInstance(obj));
}
public GeneralName getBase()
{
return base;
}
public BigInteger getMinimum()
{
if (minimum == null)
{
return BigInteger.valueOf(0);
}
return minimum.getValue();
}
public BigInteger getMaximum()
{
if (maximum == null)
{
return null;
}
return maximum.getValue();
}
/*
* GeneralSubtree ::= SEQUENCE {
* base GeneralName,
* minimum [0] BaseDistance DEFAULT 0,
* maximum [1] BaseDistance OPTIONAL }
*/
public DERObject getDERObject()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(base);
if (minimum != null)
{
v.add(new DERTaggedObject(false, 0, minimum));
}
if (maximum != null)
{
v.add(new DERTaggedObject(false, 1, maximum));
}
return new DERSequence(v);
}
}
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