package org.bouncycastle.asn1.x509;
import java.util.Enumeration;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
public class NameConstraints
extends ASN1Object
{
private GeneralSubtree[] permitted, excluded;
public static NameConstraints getInstance(Object obj)
{
if (obj instanceof NameConstraints)
{
return (NameConstraints)obj;
}
if (obj != null)
{
return new NameConstraints(ASN1Sequence.getInstance(obj));
}
return null;
}
private NameConstraints(ASN1Sequence seq)
{
Enumeration e = seq.getObjects();
while (e.hasMoreElements())
{
ASN1TaggedObject o = ASN1TaggedObject.getInstance(e.nextElement());
switch (o.getTagNo())
{
case 0:
permitted = createArray(ASN1Sequence.getInstance(o, false));
break;
case 1:
excluded = createArray(ASN1Sequence.getInstance(o, false));
break;
}
}
}
/**
* Constructor from a given details.
*
* <p>
* permitted and excluded are arrays of GeneralSubtree objects.
*
* @param permitted
* Permitted subtrees
* @param excluded
* Excludes subtrees
*/
public NameConstraints(
GeneralSubtree[] permitted,
GeneralSubtree[] excluded)
{
if (permitted != null)
{
this.permitted = permitted;
}
if (excluded != null)
{
this.excluded = excluded;
}
}
private GeneralSubtree[] createArray(ASN1Sequence subtree)
{
GeneralSubtree[] ar = new GeneralSubtree[subtree.size()];
for (int i = 0; i != ar.length; i++)
{
ar[i] = GeneralSubtree.getInstance(subtree.getObjectAt(i));
}
return ar;
}
public GeneralSubtree[] getPermittedSubtrees()
{
return permitted;
}
public GeneralSubtree[] getExcludedSubtrees()
{
return excluded;
}
/*
* NameConstraints ::= SEQUENCE { permittedSubtrees [0] GeneralSubtrees
* OPTIONAL, excludedSubtrees [1] GeneralSubtrees OPTIONAL }
*/
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
if (permitted != null)
{
v.add(new DERTaggedObject(false, 0, new DERSequence(permitted)));
}
if (excluded != null)
{
v.add(new DERTaggedObject(false, 1, new DERSequence(excluded)));
}
return new DERSequence(v);
}
}