public void DeCrypt(ref byte[] raw, int lenght, int offset, PacketType type)
{
Gamecrypt crypt;
if (type == PacketType.ClientToGameserver)
{
crypt = this.clientCrypt;
}
else if (type == PacketType.GameserverToClient)
{
crypt = this.serverCrypt;
}
else
{
throw new Exception("Wrong PacketType "
+ type.ToString() + " for " + this.ToString());
}
crypt.decrypt(ref raw, offset, lenght);
if (this.state == ConnectionState.Connected)
{
if (raw[0 + offset] == 0x2e)
{
Bytebuffer bb = new Bytebuffer(raw);
bb.Position = offset;
this.onKeyPacket(bb);
}
else if (raw[0 + offset] == 0x09)
{
// CharSelectionInfo
this.state = ConnectionState.Authed;
}
}
else if (this.state == ConnectionState.Authed)
{
if (raw[0 + offset] == 0x73)
{
this.state = ConnectionState.InGame;
}
}
else if (this.state == ConnectionState.InGame)
{
if (raw[0 + offset] == 0x0b)
{
//CharSelected
Bytebuffer bb = new Bytebuffer(raw);
bb.Position = offset;
this.onCharSelected(new Bytebuffer(raw));
}
}
}
public SendablePacket()
{
this.buffer = new Bytebuffer();
}
public ReadablePacket(byte[] buffer)
{
this.buffer = new Bytebuffer(buffer);
}
public ReadablePacket(Bytebuffer buffer)
{
this.buffer = buffer;
}
public ReadablePacket(byte[] buffer)
{
this.buffer = new Bytebuffer(buffer);
}
public ReadablePacket(Bytebuffer buffer)
{
this.buffer = buffer;
}
private void onKeyPacket(Bytebuffer packet)
{
packet.ReadByte();
this.cryptKey = packet.ReadBytes(16);
this.cryptKey[8] = (byte)0xc8;
this.cryptKey[9] = (byte)0x27;
this.cryptKey[10] = (byte)0x93;
this.cryptKey[11] = (byte)0x01;
this.cryptKey[12] = (byte)0xa1;
this.cryptKey[13] = (byte)0x6c;
this.cryptKey[14] = (byte)0x31;
this.cryptKey[15] = (byte)0x97;
serverCrypt.setKey(this.cryptKey);
clientCrypt.setKey(this.cryptKey);
// ddcd
packet.ReadInt();
packet.ReadInt();
packet.ReadByte();
this.obfusicateKey = packet.ReadInt();
serverCrypt.generateOpcodeTable(this.obfusicateKey);
clientCrypt.generateOpcodeTable(this.obfusicateKey);
}
private void onCharSelected(Bytebuffer packet)
{
packet.ReadString(); // name
packet.ReadInt(); // CharId
packet.ReadString(); // Title
packet.ReadBytes(196);// 196 bytes
this.obfusicateKey = packet.ReadInt();
serverCrypt.generateOpcodeTable(this.obfusicateKey);
clientCrypt.generateOpcodeTable(this.obfusicateKey);
}
public SendablePacket()
{
this.buffer = new Bytebuffer();
}
private void handleInit(Bytebuffer packet)
{
int sessionId = packet.ReadInt();
int protocolVer = packet.ReadInt();
byte[] publicKey = packet.ReadBytes(0x80);
// 4x read D (GameGuard);
for (int i = 0; i < 4; i++)
packet.ReadInt();
byte[] blowfishKey = packet.ReadBytes(0x10);
// set new key in LoginCrypt
serverCrypt.setKey(blowfishKey);
clientCrypt.setKey(blowfishKey);
}