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using System;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Crmf
{
public class OptionalValidity
: Asn1Encodable
{
public static OptionalValidity GetInstance(object obj)
{
if (obj == null)
return null;
if (obj is OptionalValidity optionalValidity)
return optionalValidity;
return new OptionalValidity(Asn1Sequence.GetInstance(obj));
}
public static OptionalValidity GetInstance(Asn1TaggedObject taggedObject, bool declaredExplicit)
{
return new OptionalValidity(Asn1Sequence.GetInstance(taggedObject, declaredExplicit));
}
private readonly Time m_notBefore;
private readonly Time m_notAfter;
private OptionalValidity(Asn1Sequence seq)
{
// TODO Enforce "at least one MUST be present"?
int count = seq.Count;
if (count < 0 || count > 2)
throw new ArgumentException("Bad sequence size: " + count, nameof(seq));
int pos = 0;
m_notBefore = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 0, true, Time.GetInstance);
m_notAfter = Asn1Utilities.ReadOptionalContextTagged(seq, ref pos, 1, true, Time.GetInstance);
if (pos != count)
throw new ArgumentException("Unexpected elements in sequence", nameof(seq));
}
public OptionalValidity(Time notBefore, Time notAfter)
{
// TODO Enforce "at least one MUST be present"?
m_notBefore = notBefore;
m_notAfter = notAfter;
}
public virtual Time NotBefore => m_notBefore;
public virtual Time NotAfter => m_notAfter;
/**
* <pre>
* OptionalValidity ::= SEQUENCE {
* notBefore [0] Time OPTIONAL,
* notAfter [1] Time OPTIONAL } --at least one MUST be present
* </pre>
* @return a basic ASN.1 object representation.
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(2);
v.AddOptionalTagged(true, 0, m_notBefore);
v.AddOptionalTagged(true, 1, m_notAfter);
return new DerSequence(v);
}
}
}
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