private static BaseScertMessage Instantiate(Type classType, RT_MSG_TYPE id, byte[] plain)
{
BaseScertMessage msg = null;
//
using (MemoryStream stream = new MemoryStream(plain))
{
using (BinaryReader reader = new BinaryReader(stream))
{
if (classType == null)
{
msg = new RawScertMessage(id);
}
else
{
msg = (BaseScertMessage)Activator.CreateInstance(classType);
}
try
{
msg.Deserialize(reader);
}
catch (Exception e)
{
Console.WriteLine($"Error deserializing {id} {BitConverter.ToString(plain)}");
Console.WriteLine(e);
}
}
}
return(msg);
}
public static BaseScertMessage Instantiate(RT_MSG_TYPE id, byte[] hash, byte[] messageBuffer, Func <RT_MSG_TYPE, CipherContext, ICipher> getCipherCallback = null)
{
// Init first
Initialize();
BaseScertMessage msg = null;
// Get class
if (!_messageClassById.TryGetValue(id, out var classType))
{
classType = null;
}
// Decrypt
if (hash != null)
{
CipherContext context = (CipherContext)(hash[3] >> 5);
var cipher = getCipherCallback(id, context);
if (cipher == null)
{
return(null);
}
if (cipher.Decrypt(messageBuffer, hash, out var plain))
{
msg = Instantiate(classType, id, plain);
}
// This is a hack to make the dme server connect
// We don't really care what their key is since we're not encrypting our response
else if (id == RT_MSG_TYPE.RT_MSG_CLIENT_CRYPTKEY_PUBLIC)
{
msg = Instantiate(classType, id, plain);
}
else
{
Logger.Error($"Unable to decrypt {id}, HASH:{BitConverter.ToString(hash)} DATA:{BitConverter.ToString(messageBuffer)} CIPHER:{cipher}");
}
}
else
{
msg = Instantiate(classType, id, messageBuffer);
}
return(msg);
}
