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package org.spongycastle.asn1.x509;
import java.util.Enumeration;
import java.util.Vector;
import org.spongycastle.asn1.ASN1Encodable;
import org.spongycastle.asn1.ASN1EncodableVector;
import org.spongycastle.asn1.ASN1Object;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.ASN1OctetString;
import org.spongycastle.asn1.ASN1Primitive;
import org.spongycastle.asn1.ASN1Sequence;
import org.spongycastle.asn1.ASN1TaggedObject;
import org.spongycastle.asn1.DEROctetString;
import org.spongycastle.asn1.DERSequence;
import org.spongycastle.asn1.DERTaggedObject;
import org.spongycastle.asn1.DERUTF8String;
/**
* Implementation of <code>IetfAttrSyntax</code> as specified by RFC3281.
*/
public class IetfAttrSyntax
extends ASN1Object
{
public static final int VALUE_OCTETS = 1;
public static final int VALUE_OID = 2;
public static final int VALUE_UTF8 = 3;
GeneralNames policyAuthority = null;
Vector values = new Vector();
int valueChoice = -1;
public static IetfAttrSyntax getInstance(Object obj)
{
if (obj instanceof IetfAttrSyntax)
{
return (IetfAttrSyntax)obj;
}
if (obj != null)
{
return new IetfAttrSyntax(ASN1Sequence.getInstance(obj));
}
return null;
}
/**
*
*/
private IetfAttrSyntax(ASN1Sequence seq)
{
int i = 0;
if (seq.getObjectAt(0) instanceof ASN1TaggedObject)
{
policyAuthority = GeneralNames.getInstance(((ASN1TaggedObject)seq.getObjectAt(0)), false);
i++;
}
else if (seq.size() == 2)
{ // VOMS fix
policyAuthority = GeneralNames.getInstance(seq.getObjectAt(0));
i++;
}
if (!(seq.getObjectAt(i) instanceof ASN1Sequence))
{
throw new IllegalArgumentException("Non-IetfAttrSyntax encoding");
}
seq = (ASN1Sequence)seq.getObjectAt(i);
for (Enumeration e = seq.getObjects(); e.hasMoreElements();)
{
ASN1Primitive obj = (ASN1Primitive)e.nextElement();
int type;
if (obj instanceof ASN1ObjectIdentifier)
{
type = VALUE_OID;
}
else if (obj instanceof DERUTF8String)
{
type = VALUE_UTF8;
}
else if (obj instanceof DEROctetString)
{
type = VALUE_OCTETS;
}
else
{
throw new IllegalArgumentException("Bad value type encoding IetfAttrSyntax");
}
if (valueChoice < 0)
{
valueChoice = type;
}
if (type != valueChoice)
{
throw new IllegalArgumentException("Mix of value types in IetfAttrSyntax");
}
values.addElement(obj);
}
}
public GeneralNames getPolicyAuthority()
{
return policyAuthority;
}
public int getValueType()
{
return valueChoice;
}
public Object[] getValues()
{
if (this.getValueType() == VALUE_OCTETS)
{
ASN1OctetString[] tmp = new ASN1OctetString[values.size()];
for (int i = 0; i != tmp.length; i++)
{
tmp[i] = (ASN1OctetString)values.elementAt(i);
}
return tmp;
}
else if (this.getValueType() == VALUE_OID)
{
ASN1ObjectIdentifier[] tmp = new ASN1ObjectIdentifier[values.size()];
for (int i = 0; i != tmp.length; i++)
{
tmp[i] = (ASN1ObjectIdentifier)values.elementAt(i);
}
return tmp;
}
else
{
DERUTF8String[] tmp = new DERUTF8String[values.size()];
for (int i = 0; i != tmp.length; i++)
{
tmp[i] = (DERUTF8String)values.elementAt(i);
}
return tmp;
}
}
/**
*
* <pre>
*
* IetfAttrSyntax ::= SEQUENCE {
* policyAuthority [0] GeneralNames OPTIONAL,
* values SEQUENCE OF CHOICE {
* octets OCTET STRING,
* oid OBJECT IDENTIFIER,
* string UTF8String
* }
* }
*
* </pre>
*/
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
if (policyAuthority != null)
{
v.add(new DERTaggedObject(0, policyAuthority));
}
ASN1EncodableVector v2 = new ASN1EncodableVector();
for (Enumeration i = values.elements(); i.hasMoreElements();)
{
v2.add((ASN1Encodable)i.nextElement());
}
v.add(new DERSequence(v2));
return new DERSequence(v);
}
}
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