public void WriteUniversalString(string correctResultHex, string valueToTest)
{
var encoded = Helpers.GetExampleBytes(correctResultHex);
var enc = Encoding.GetEncoding("utf-32BE");
if (enc == null)
{
throw new PlatformNotSupportedException("UTF-32 encoding is not supported on this platform.");
}
using (var ms = new MemoryStream())
{
var asn1Obj = new Asn1UniversalString(valueToTest);
new DerWriter(ms).Write(asn1Obj);
var res = Enumerable.SequenceEqual(encoded, ms.ToArray());
Assert.True(res);
}
}
private static T MakeInstanceOfAsn1Object <T>(long nodeStartOffset, Asn1Class asn1Class, bool constructed, int tag, SubStream content)
where T : Asn1ObjectBase
{
T foundObject;
Asn1ObjectBase shouldBeType = null;
if (asn1Class == Asn1Class.ContextSpecific)
{
shouldBeType = new Asn1ContextSpecific(constructed, tag, content);
}
else
{
switch ((Asn1Type)tag)
{
case Asn1Type.Eoc:
shouldBeType = new Asn1Eoc();
break;
case Asn1Type.Boolean:
shouldBeType = new Asn1Boolean(content, constructed);
break;
case Asn1Type.Integer:
shouldBeType = new Asn1Integer(content, constructed);
break;
case Asn1Type.BitString:
shouldBeType = new Asn1BitString(content, constructed);
break;
case Asn1Type.OctetString:
shouldBeType = new Asn1OctetString(content, constructed);
break;
case Asn1Type.Null:
shouldBeType = new Asn1Null(constructed);
break;
case Asn1Type.ObjectIdentifier:
shouldBeType = new Asn1ObjectIdentifier(content, constructed);
break;
case Asn1Type.Real:
shouldBeType = new Asn1Real(content, constructed);
break;
case Asn1Type.Enumerated:
shouldBeType = new Asn1Enumerated(content, constructed);
break;
case Asn1Type.Utf8String:
shouldBeType = new Asn1Utf8String(content, constructed);
break;
case Asn1Type.RelativeOid:
shouldBeType = new Asn1RelativeOid(content, constructed);
break;
case Asn1Type.Sequence:
shouldBeType = new Asn1Sequence(asn1Class, content, constructed);
break;
case Asn1Type.Set:
shouldBeType = new Asn1Set(asn1Class, content, constructed);
break;
case Asn1Type.NumericString:
shouldBeType = new Asn1NumericString(content, constructed);
break;
case Asn1Type.PrintableString:
shouldBeType = new Asn1PrintableString(content, constructed);
break;
case Asn1Type.T61String:
shouldBeType = new Asn1T61String(content, constructed);
break;
case Asn1Type.Ia5String:
shouldBeType = new Asn1Ia5String(content, constructed);
break;
case Asn1Type.UtcTime:
shouldBeType = new Asn1UtcTime(content, constructed);
break;
case Asn1Type.GeneralizedTime:
shouldBeType = new Asn1GeneralizedTime(content, constructed);
break;
case Asn1Type.GraphicString:
shouldBeType = new Asn1GraphicString(content, constructed);
break;
case Asn1Type.GeneralString:
shouldBeType = new Asn1GeneralString(content, constructed);
break;
case Asn1Type.UniversalString:
shouldBeType = new Asn1UniversalString(content, constructed);
break;
case Asn1Type.BmpString:
shouldBeType = new Asn1BmpString(content, constructed);
break;
case Asn1Type.ObjectDescriptor:
case Asn1Type.External:
case Asn1Type.EmbeddedPdv:
case Asn1Type.VideotexString:
case Asn1Type.VisibleString:
case Asn1Type.CharacterString:
case Asn1Type.LongForm:
default:
throw new NotSupportedException($"ASN.1 tag {tag} is unsupported.");
}
}
foundObject = shouldBeType as T;
// sanity check
if (foundObject == null)
{
throw new FormatException(FormattableString.Invariant($"ASN.1 node at offset {nodeStartOffset} is of type {shouldBeType.GetType()} but expected type was {typeof(T)}"));
}
return(foundObject);
}
