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GeneralSubtree.javaAPI DocAndroid 1.5 API4794Wed May 06 22:41:06 BST 2009org.bouncycastle.asn1.x509

GeneralSubtree

public class GeneralSubtree extends org.bouncycastle.asn1.ASN1Encodable
Class for containing a restriction object subtrees in NameConstraints. See RFC 3280. 

GeneralSubtree ::= SEQUENCE
{
base GeneralName,
minimum [0] BaseDistance DEFAULT 0,
maximum [1] BaseDistance OPTIONAL
}
see
org.bouncycastle.asn1.x509.NameConstraints

Fields Summary
private static final BigInteger
ZERO
private GeneralName
base
private org.bouncycastle.asn1.DERInteger
minimum
private org.bouncycastle.asn1.DERInteger
maximum
Constructors Summary
public GeneralSubtree(org.bouncycastle.asn1.ASN1Sequence seq)


     
          
    
        base = GeneralName.getInstance(seq.getObjectAt(0));

        switch (seq.size()) 
        {
        case 1:
            break;
        case 2:
            ASN1TaggedObject o = ASN1TaggedObject.getInstance(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.getInstance(seq.getObjectAt(1)));
            maximum = DERInteger.getInstance(ASN1TaggedObject.getInstance(seq.getObjectAt(2)));
            break;
        default:
            throw new IllegalArgumentException("Bad sequence size: "
                    + seq.size());
        }
public GeneralSubtree(GeneralName base, BigInteger minimum, BigInteger maximum)
Constructor from a given details. According RFC 3280, the minimum and maximum fields are not used with any name forms, thus minimum MUST be zero, and maximum MUST be absent.

If minimum is null, zero is assumed, if maximum is null, maximum is absent.

param
base A restriction.
param
minimum Minimum
param
maximum Maximum

        this.base = base;
        if (maximum != null)
        {
            this.maximum = new DERInteger(maximum);
        }
        if (minimum == null)
        {
            this.minimum = null;
        }
        else
        {
            this.minimum = new DERInteger(minimum);
        }
Methods Summary
public GeneralNamegetBase()

        return base;
public static org.bouncycastle.asn1.x509.GeneralSubtreegetInstance(org.bouncycastle.asn1.ASN1TaggedObject o, boolean explicit)

        return new GeneralSubtree(ASN1Sequence.getInstance(o, explicit));
public static org.bouncycastle.asn1.x509.GeneralSubtreegetInstance(java.lang.Object obj)

        if (obj == null)
        {
            return null;
        }

        if (obj instanceof GeneralSubtree)
        {
            return (GeneralSubtree) obj;
        }

        return new GeneralSubtree(ASN1Sequence.getInstance(obj));
public java.math.BigIntegergetMaximum()

        if (maximum == null)
        {
            return null;
        }

        return maximum.getValue();
public java.math.BigIntegergetMinimum()

        if (minimum == null)
        {
            return ZERO;
        }

        return minimum.getValue();
public org.bouncycastle.asn1.DERObjecttoASN1Object()
Produce an object suitable for an ASN1OutputStream. Returns: 
GeneralSubtree ::= SEQUENCE
{
base GeneralName,
minimum [0] BaseDistance DEFAULT 0,
maximum [1] BaseDistance OPTIONAL
}

return
a DERObject

        ASN1EncodableVector v = new ASN1EncodableVector();

        v.add(base);

        if (minimum != null && !minimum.getValue().equals(ZERO))
        {
            v.add(new DERTaggedObject(false, 0, minimum));
        }

        if (maximum != null)
        {
            v.add(new DERTaggedObject(false, 1, maximum));
        }

        return new DERSequence(v);