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using System.Text;
namespace Org.BouncyCastle.Asn1.X509
{
/**
* The DistributionPoint object.
* <pre>
* DistributionPoint ::= Sequence {
* distributionPoint [0] DistributionPointName OPTIONAL,
* reasons [1] ReasonFlags OPTIONAL,
* cRLIssuer [2] GeneralNames OPTIONAL
* }
* </pre>
*/
public class DistributionPoint
: Asn1Encodable
{
public static DistributionPoint GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is DistributionPoint distributionPoint)
return distributionPoint;
return new DistributionPoint(Asn1Sequence.GetInstance(obj));
}
public static DistributionPoint GetInstance(Asn1TaggedObject obj, bool explicitly)
{
return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
}
private readonly DistributionPointName m_distributionPoint;
private readonly ReasonFlags m_reasons;
private readonly GeneralNames m_crlIssuer;
private DistributionPoint(Asn1Sequence seq)
{
for (int i = 0; i != seq.Count; i++)
{
Asn1TaggedObject t = Asn1TaggedObject.GetInstance(seq[i]);
switch (t.TagNo)
{
case 0:
// CHOICE so explicit
m_distributionPoint = DistributionPointName.GetInstance(t, true);
break;
case 1:
m_reasons = new ReasonFlags(DerBitString.GetInstance(t, false));
break;
case 2:
m_crlIssuer = GeneralNames.GetInstance(t, false);
break;
}
}
}
public DistributionPoint(DistributionPointName distributionPointName, ReasonFlags reasons,
GeneralNames crlIssuer)
{
m_distributionPoint = distributionPointName;
m_reasons = reasons;
m_crlIssuer = crlIssuer;
}
public DistributionPointName DistributionPointName => m_distributionPoint;
public ReasonFlags Reasons => m_reasons;
public GeneralNames CrlIssuer => m_crlIssuer;
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(3);
// As this is a CHOICE it must be explicitly tagged
v.AddOptionalTagged(true, 0, m_distributionPoint);
v.AddOptionalTagged(false, 1, m_reasons);
v.AddOptionalTagged(false, 2, m_crlIssuer);
return new DerSequence(v);
}
public override string ToString()
{
StringBuilder buf = new StringBuilder();
buf.AppendLine("DistributionPoint: [");
if (m_distributionPoint != null)
{
AppendObject(buf, "distributionPoint", m_distributionPoint.ToString());
}
if (m_reasons != null)
{
AppendObject(buf, "reasons", m_reasons.ToString());
}
if (m_crlIssuer != null)
{
AppendObject(buf, "cRLIssuer", m_crlIssuer.ToString());
}
buf.AppendLine("]");
return buf.ToString();
}
private void AppendObject(StringBuilder buf, string name, string val)
{
string indent = " ";
buf.Append(indent);
buf.Append(name);
buf.AppendLine(":");
buf.Append(indent);
buf.Append(indent);
buf.Append(val);
buf.AppendLine();
}
}
}
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