/// <summary>
/// This method parses and handles a CD-Key authorization request from
/// from a game server.
/// </summary>
/// <param name="Parser">Supplies the message parse context.</param>
/// <param name="Sender">Supplies the game server address.</param>
/// <param name="Socket">Supplies the associated socket descriptor
/// upon which the message was received.</param>
private void OnRecvMstCDKeyAuthorizationRequest(ExoParseBuffer Parser, IPEndPoint Sender, SocketInfo Socket)
{
UInt16 DataPort;
UInt16 EntryCount;
UInt32 ClientIP;
UInt16 ClientPort;
byte[] ServerChallenge;
UInt16 Length;
List<CDKeyInfo> CDKeyHashes;
CDKeyInfo CDKeyHash;
string AccountName;
int KeyIndex;
int PortNumberHbo;
if (!Parser.ReadWORD(out DataPort))
return;
if (!Parser.ReadWORD(out EntryCount))
return;
if (EntryCount != 1)
return;
if (!Parser.ReadDWORD(out ClientIP))
return;
if (!Parser.ReadWORD(out ClientPort))
return;
PortNumberHbo = IPAddress.NetworkToHostOrder(ClientPort);
if ((PortNumberHbo == 0) || ((PortNumberHbo & 0xFFFF) != PortNumberHbo))
PortNumberHbo = 5120;
IPEndPoint ClientEndpoint = new IPEndPoint((long)ClientIP, PortNumberHbo);
if (!Parser.ReadWORD(out Length))
return;
if ((ServerChallenge = Parser.ReadBytes(Length)) == null)
return;
if (!Parser.ReadWORD(out Length))
return;
CDKeyHashes = new List<CDKeyInfo>();
CDKeyHash = new CDKeyInfo();
KeyIndex = 0;
while (Length-- != 0)
{
UInt16 HashLength;
if (!Parser.ReadSmallString(out CDKeyHash.PublicCDKey, 16))
return;
if (!Parser.ReadWORD(out HashLength))
return;
if ((CDKeyHash.CDKeyHash = Parser.ReadBytes(HashLength)) == null)
return;
//
// N.B. The following is somewhat of a hack in that we are not
// bothering to extract the (real) product type from the
// CD-Key. As a result, it is possible that the wrong
// answer could be provided for clients without all of
// the expansions; this situation is considered unlikely
// in the current state of affairs.
//
// A better fit could be had by examining the expansion
// mask required by the server in the data table, but
// this does not appear worthwhile at this stage.
//
if (KeyIndex == 0)
CDKeyHash.Product = 0;
else
CDKeyHash.Product = (UInt16) (1 << (KeyIndex - 1));
CDKeyHash.AuthStatus = (UInt16)ConnectStatus.CONNECT_ERR_SUCCESS;
CDKeyHashes.Add(CDKeyHash);
}
if (!Parser.ReadSmallString(out AccountName, 16))
return;
SendMstCDKeyAuthorization(Sender, CDKeyHashes);
}
