/// <summary>
/// Decodes the object by BER.
/// </summary>
/// <param name="buffer">A buffer that contains a BER encoding result.</param>
/// <param name="explicitTag">Indicates whether the tags should be encoded explicitly. In our Test Suites, it will always be true.</param>
/// <returns>The number of the bytes consumed in the buffer to decode this object.</returns>
/// <exception cref="Asn1ConstraintsNotSatisfied">
/// Thrown when the constraints are not satisfied after decoding.
/// </exception>
/// <exception cref="Asn1DecodingUnexpectedData">
/// Thrown when the data in the buffer can not be properly decoded.
/// </exception>
/// <remarks>Override this method in a user-defined class only if the procedure is not applicable in some special scenarios.</remarks>
public override int BerDecode(IAsn1DecodingBuffer buffer, bool explicitTag = true)
{
int returnVal = 0, lengthAfterUniTag = 0, tagLength = 0;
if (explicitTag)
{
//Decode the top most tag and universal class tag
Asn1Tag topTag;
returnVal += TagBerDecode(buffer, out topTag);
}
returnVal += LengthBerDecode(buffer, out lengthAfterUniTag);
Asn1Tag valueTag;
//Decode data
valueTag = new Asn1Tag(Asn1TagType.Universal, 10)
{
EncodingWay = EncodingWay.Primitive
};
if (IsTagMatch(buffer, valueTag, out tagLength))
{
resultCode = new LDAPResult_resultCode();
returnVal += resultCode.BerDecode(buffer, true);
}
valueTag = new Asn1Tag(Asn1TagType.Universal, 4)
{
EncodingWay = EncodingWay.Primitive
};
if (IsTagMatch(buffer, valueTag, out tagLength))
{
matchedDN = new LDAPDN();
returnVal += matchedDN.BerDecode(buffer, true);
}
// decode errorMessage
valueTag = new Asn1Tag(Asn1TagType.Universal, 4)
{
EncodingWay = EncodingWay.Primitive
};
if (IsTagMatch(buffer, valueTag, out tagLength))
{
errorMessage = new LDAPString();
returnVal += errorMessage.BerDecode(buffer, true);
}
// decode referral
valueTag = new Asn1Tag(Asn1TagType.Context, 3)
{
EncodingWay = EncodingWay.Constructed
};
if (IsTagMatch(buffer, valueTag, out tagLength))
{
referral = new Referral();
returnVal += referral.BerDecode(buffer, false);
}
// decode responseName
valueTag = new Asn1Tag(Asn1TagType.Context, 10)
{
EncodingWay = EncodingWay.Primitive
};
if (IsTagMatch(buffer, valueTag, out tagLength, true))
{
responseName = new LDAPOID();
returnVal += responseName.BerDecode(buffer, false);
}
// decode response
valueTag = new Asn1Tag(Asn1TagType.Context, 11)
{
EncodingWay = EncodingWay.Primitive
};
if (IsTagMatch(buffer, valueTag, out tagLength, true))
{
response = new Asn1OctetString();
returnVal += response.BerDecode(buffer, false);
}
return(returnVal);
}