public void Add(params object[] subListValues)
{
var dn = new DNodeList();
foreach (var obj in subListValues)
{
dn.Add(obj);
}
base.Add(dn);
}
public Message(MessageType type, MessageCode code, DNodeList args, byte numA, byte numB)
{
Type = type;
Code = code;
if (args == null)
{
args = new DNodeList();
}
Data = args;
NumA = numA;
NumB = numB;
}
public static IEnumerable <Message> ParseIncoming(byte[] data, Blowfish blowfishContext = null)
{
for (int pos = 0; pos < data.Length;)
{
if (pos + 6 > data.Length)
{
throw new Exception("Incomplete Header received!");
}
int packetSize = data[pos + 2] + 256 * data[pos + 1] + 256 * 256 * data[pos + 0];
MessageType type = (MessageType)(data[pos + 3] >> 6);
MessageCode code = (MessageCode)(data[pos + 4]);
byte numA = (byte)(data[pos + 5] >> 4);
byte numB = (byte)(data[pos + 5] & 0x0F);
if (pos + packetSize > data.Length)
{
throw new Exception("Incomplete message body received!");
}
var argLen = packetSize - 6;
byte[] msgData = new byte[argLen];
if (argLen != 0)
{
Array.Copy(data, pos + 6, msgData, 0, argLen);
switch (type)
{
case MessageType.GSMessage:
XorCrypt.Decrypt(msgData);
break;
case MessageType.GSEncryptMessage:
if (blowfishContext == null)
{
throw new Exception("Received BF encrypted message, but no key available!");
}
blowfishContext.DecipherPadded(ref msgData);
break;
case MessageType.GameMessage:
throw new NotImplementedException("GameMessage received, WAT DO?");
}
}
yield return(new Message(type, code, DNodeList.Parse(msgData), numA, numB));
pos += packetSize;
}
yield break;
}
protected DNodeList(byte[] data, ref int pos)
{
for (; pos < data.Length;)
{
byte type = data[pos];
pos++;
switch (type)
{
case (byte)'s':
int endPos;
for (endPos = pos; endPos < data.Length && data[endPos] != 0; endPos++)
{
;
}
Add(new DNodeString(Global.ServerEncoding.GetString(data, pos, endPos - pos)));
pos = endPos + 1;
break;
case (byte)'b':
int binLen = (data[pos] << 24) + (data[pos + 1] << 16) + (data[pos + 2] << 8) + data[pos + 3];
if (pos + 4 + binLen > data.Length)
{
throw new Exception("Binary DataElement too large!");
}
var binData = new byte[binLen];
Array.Copy(data, pos + 4, binData, 0, binLen);
Add(new DNodeBinary(binData));
pos += 4 + binLen;
break;
case (byte)'[':
var subList = new DNodeList(data, ref pos);
if (data[pos - 1] != (byte)']')
{
throw new Exception("List not finished!");
}
Add(subList);
break;
case (byte)']':
return;
default:
throw new Exception("Unknown Element in DataList!");
}
}
}
public Message GetBfKeyResponse()
{
var rng = new RNGCryptoServiceProvider();
Key = new byte[16];
rng.GetBytes(Key);
var encryptedBF = rsa.Encrypt(Key, false);
var data = new DNodeList {
2, { 1, encryptedBF.Length, encryptedBF }
};
return(new Message(MessageType.GSMessage, MessageCode.RSAEXCHANGE, data, 8, 2));
}
public Message(MessageType type, LobbyMessageCode lobbyCode, DNodeList lobbyArgs, byte numA, byte numB)
{
Type = type;
Code = MessageCode.LOBBY_MSG;
if (lobbyArgs == null)
{
lobbyArgs = new DNodeList();
}
Data = new DNodeList {
(int)lobbyCode, lobbyArgs
};
NumA = numA;
NumB = numB;
}
public CDKeyMessage(byte[] data)
{
if (data[0] != 0xD3)
{
throw new Exception("CDKey Message: Unknown packet!");
}
int dataLen = data[4];
var packetData = new byte[dataLen];
Array.Copy(data, 5, packetData, 0, dataLen);
Global.CDKeyCrypt.DecipherPadded(ref packetData);
Data = DNodeList.Parse(packetData);
}
public void Add(IEnumerable <IDNode> nodes)
{
if (nodes == null)
{
return;
}
var dn = new DNodeList();
foreach (var obj in nodes)
{
dn.Add(obj);
}
base.Add(dn);
}
public Message GetPublicKeyRequest() //sends the pubkey, requests a encrypted BF key
{
rsa = new RSACryptoServiceProvider(512);
var rsaParams = rsa.ExportParameters(false);
var pkData = new byte[260];
pkData[1] = 2; //0x200 = 512Bit
pkData[259] = 3; //exp = 3
Array.Copy(rsaParams.Modulus, 0, pkData, 0x44, 64);
var data = new DNodeList {
1, { 1, pkData.Length, pkData }
};
return(new Message(MessageType.GSMessage, MessageCode.RSAEXCHANGE, data, 8, 2));
}
public Message LobbyFailResponse(DNodeList args = null)
{
return(new Message(MessageType.GSMessage, LobbyMessageCode.LB_GSFAIL, new DNodeList {
Data[0].AsString, args
}, 1, 4));
}
public Message LobbySuccessResponse(DNodeList args = null)
{
return(new Message(MessageType.GSMessage, LobbyMessageCode.LB_GSSUCCESS, new DNodeList {
Data[0].AsString, args
}, 1, 4));
}
public Message FailResponse(DNodeList args = null)
{
return(new Message(MessageType.GSMessage, MessageCode.GSFAIL, new DNodeList {
(byte)Code, args
}, 1, 4));
}
public Message SuccessResponse(DNodeList args = null)
{
return(new Message(MessageType.GSMessage, MessageCode.GSSUCCESS, new DNodeList {
(byte)Code, args
}, 1, 4));
}
public Message(LobbyMessageCode lobbyCode, DNodeList lobbyArgs) : this(MessageType.GSMessage, lobbyCode, lobbyArgs, 1, 4)
{
}
public Message(MessageCode code, DNodeList args) : this(MessageType.GSMessage, code, args, 1, 4)
{
}
public CDKeyMessage(DNodeList data)
{
Data = data;
}