internal static bool TryParse(byte[] data, BinaryReader reader, out NtlmAuthenticationToken token)
{
token = null;
NtlmNegotiateFlags flags = (NtlmNegotiateFlags)reader.ReadInt32();
if (!NtlmUtils.ParseString(NtlmNegotiateFlags.Oem, reader,
data, flags.HasFlagSet(NtlmNegotiateFlags.OemDomainSupplied),
out string domain))
{
return(false);
}
if (!NtlmUtils.ParseString(NtlmNegotiateFlags.Oem, reader,
data, flags.HasFlagSet(NtlmNegotiateFlags.OemWorkstationSupplied),
out string workstation))
{
return(false);
}
if (!NtlmUtils.TryParse(reader, out Version version))
{
return(false);
}
token = new NtlmNegotiateAuthenticationToken(data, flags, domain, workstation, version);
return(true);
}
/// <summary>
/// Try and parse data into an NTLM authentication token.
/// </summary>
/// <param name="data">The data to parse.</param>
/// <param name="token">The NTLM authentication token.</param>
/// <param name="client">True if this is a token from a client.</param>
/// <param name="token_count">The token count number.</param>
/// <returns>True if parsed successfully.</returns>
internal static bool TryParse(byte[] data, int token_count, bool client, out NtlmAuthenticationToken token)
{
token = null;
if (data.Length < 12)
{
return(false);
}
if (BinaryEncoding.Instance.GetString(data, 0, 8) != NTLM_MAGIC)
{
return(false);
}
MemoryStream stm = new MemoryStream(data);
BinaryReader reader = new BinaryReader(stm);
stm.Position = 8;
NtlmMessageType type = (NtlmMessageType)reader.ReadInt32();
switch (type)
{
case NtlmMessageType.Negotiate:
return(NtlmNegotiateAuthenticationToken.TryParse(data, reader, out token));
case NtlmMessageType.Challenge:
return(NtlmChallengeAuthenticationToken.TryParse(data, reader, out token));
case NtlmMessageType.Authenticate:
return(NtlmAuthenticateAuthenticationToken.TryParse(data, reader, out token));
default:
return(false);
}
}
