public static byte[] UnPack(byte[] data, out uint sess)
{
sess = 0;
var len = data.Length;
if (len == Const.HeartBeatLength)
{
return(new byte[] { });
}
//先检查下最小长度//
if (len < Const.PackageSessionLength + Const.PackageHmacLength)
{
DebugLogger.DebugNetworkError("Receve Data Length Error! Got " + len + " Byte, Less than Session Length plus Hmac Length");
throw new NetworkingException((int)ErrorCode.DataError);
}
string hmac_pkg = NetCrypter.CryptData(data, 0, len - Const.PackageHmacLength);
string hmac_server = Encoding.Default.GetString(data, len - Const.PackageHmacLength, Const.PackageHmacLength);
if (hmac_pkg != hmac_server)
{
DebugLogger.DebugNetworkError("HMAC Invalid! hmac_pkg:" + hmac_pkg + ", hmac_server: " + hmac_server);
throw new NetworkingException((int)ErrorCode.DataError);
}
int dataLength = len - Const.PackageHmacLength - Const.PackageSessionLength;
//获得SessionID//
sess = NetUtil.bigEndian2UInt(data, dataLength, Const.PackageSessionLength);
//拷贝获得的接收数据//
var ReceiveData = new byte[dataLength];
Buffer.BlockCopy(data, 0, ReceiveData, 0, dataLength);
return(ReceiveData);
}
public static byte[] Pack(uint sess, string opCode, byte[] data)
{
int index = 0;
int msglen = data.Length + Const.PackageSessionLength + Const.PackageHmacLength;
byte[] header = NetUtil.ushort2bigEndian((ushort)msglen);
var SendData = new byte[header.Length + msglen];
// 拷贝文件长度数据
Buffer.BlockCopy(header, 0, SendData, index, header.Length);
index += header.Length;
//先将数据拷贝到数据包//
Buffer.BlockCopy(data, 0, SendData, index, data.Length);
index += data.Length;
//获得Session的Byte数据//
byte[] session = NetUtil.uInt2BigEndian(sess);
//拷贝Session数据//
Buffer.BlockCopy(session, 0, SendData, index, session.Length);
index += session.Length;
//计算Hmac数据//
byte[] hmac = Encoding.Default.GetBytes(NetCrypter.CryptData(SendData, header.Length, index));
//拷贝Hmac数据//
Buffer.BlockCopy(hmac, 0, SendData, index, hmac.Length);
return(SendData);
}
public static byte[] GenHandShake(string uid, string gameServer, string subid, uint connectionIndex)
{
int clientReceivedSeq = 0;
DebugLogger.Debug("GenHandShake uid:" + uid + " gameServer:" + gameServer + " subid:" + subid);
string handshake = string.Format
(
"{0}@{1}#{2}:{3}:{4}",
Convert.ToBase64String(Encoding.Default.GetBytes(uid)),
Convert.ToBase64String(Encoding.Default.GetBytes(gameServer)),
Convert.ToBase64String(Encoding.Default.GetBytes(subid)),
connectionIndex,
clientReceivedSeq
);
string hmac_encode64 = handshake + ":" + NetCrypter.CryptData(handshake);
byte[] hmac_encode64_bits = Encoding.Default.GetBytes(hmac_encode64);
return(hmac_encode64_bits);
}
internal static Exception Login(string ip, int port, string account, out IProtocol p)
{
p = new TcpProtocol(ip, port, null);
var cfg = new Dictionary <string, ProtocolCfg>()
{
{ "SendBufferSize", new ProtocolCfg {
intElement = Const.PackageMaxLength
} },
{ "ReceiveBufferSize", new ProtocolCfg {
intElement = Const.PackageMaxLength
} },
{ "ReceiveTimeout", new ProtocolCfg {
intElement = 3000
} }
};
p.SetCfg(cfg);
NodeInfo node = null;
try
{
// 第一步建立连接
p.Connect();
//第二步，收到服务端发回的base64(8bytes random challenge)随机串，用于后序的握手验证//
byte[] data = p.Read();
//第三步 生成 8bytes 随机串 client key
byte[] client_key = Convert.FromBase64String(Encoding.Default.GetString(data, 0, data.Length));
data = LoginPass.GenSecretKey(data, client_key);
//第四步，向服务端发送base64(DH-Exchange(client key)) 用于生成 secret 的 key
p.Send(DataPack.PackLength(data));
//第五步，收到服务端发送过来的base64(DH-Exchange(server key)) 用于生成 secret 的 key
data = p.Read();
//第六步，secret := DH-Secret(client key/server key)服务器和客户端都可以计算出同一个 8 字节的 secret 用来加密数据
byte[] secret = LoginPass.GenVerifySecret(data, client_key);
NetCrypter.setSecret(secret);
//第七步，base64(HMAC(challenge, secret))回应服务器第一步握手的挑战码，确认握手正常
data = LoginPass.GenFirstChallenge(client_key, secret);
p.Send(DataPack.PackLength(data));
//第八步，DES(secret, base64(token))使用 DES 算法，以 secret 做 key 加密传输 token，token 包含帐号信息[user，sdkid]
data = LoginPass.GenSecretUserToken(account, secret);
p.Send(DataPack.PackLength(data));
//第九步，认证结果信息，前2个字节retcode 200 表示成功，只有成功才解析后续内容(base64(uid:subid)@base64(server)#base64(info))
data = p.Read();
node = LoginPass.ProcessLoginData(data);
// 登陆完毕，关闭当前连接，准备连接node
p.Close();
}
catch (Exception e)
{
return(e);
}
DebugLogger.Debug("login node" + node.nodeHost + node.nodePort);
// 连接节点
p = new TcpProtocol(node.nodeHost, node.nodePort, new ReConnect(UsrLogin.ConnectNode));
cfg["ReceiveTimeout"] = new ProtocolCfg {
intElement = 10000
};
p.SetCfg(cfg);
p.Node = node;
return(ConnectNode(p.Node, p));
}
