public ClientID ValidateClientID(GameServerUserToken token, GameServerID gameserverId)
{
var name = ValidateAndGetNameImpl(token.Credential, gameserverId);
return(new ClientID {
ID = Guid.Parse(name)
});
}
public GameServerUserToken CreatePlayerToken(ClientID clientID, GameServerID gameserverId)
{
var name = clientID.ID.ToString();
return(new GameServerUserToken {
Credential = CreatePlayerTokenImpl(name, gameserverId)
});
}
static void Main(string[] args)
{
Console.Title = "Backend.GameServer";
if (args.Length != 4)
{
Console.Error.WriteLine("Provide ip address (such as 127.0.0.1), TCP port and secret key (base64) as command line args");
return;
}
var argIpAddress = args[0];
var argPortNumber = args[1];
var argSecretKey = args[2];
var argGameServerId = args[3];
IPAddress address;
if (!IPAddress.TryParse(argIpAddress, out address))
{
Console.Error.WriteLine("\"{0}\" is not a valid IP address", args[0]);
return;
}
int port;
if (!int.TryParse(argPortNumber, out port))
{
Console.Error.WriteLine("\"{0}\" is not a valid TCP port", args[1]);
return;
}
var ipEndPoint = new IPEndPoint(address, port);
byte[] secretKey = Convert.FromBase64String(argSecretKey);
var gameServerID = new GameServerID {
ID = Guid.Parse(argGameServerId)
};
Console.WriteLine("Listen on {0}", ipEndPoint);
var cts = new CancellationTokenSource();
var server = new AsyncServerHost(ipEndPoint);
var gameServerImpl = new GameServerImpl(gameServerID, secretKey);
Task t = server.Start(gameServerImpl, cts.Token);
Console.WriteLine("Launched game server process on {0}", ipEndPoint);
t.Wait();
}
private string ValidateAndGetNameImpl(string tokenString, GameServerID gameserverId)
{
var tokenHandler = new JwtSecurityTokenHandler();
var validationParameters = new TokenValidationParameters()
{
ValidAudience = ComposeAudienceUrl(gameserverId),
IssuerSigningToken = new BinarySecretSecurityToken(this._synchroniedKey),
ValidIssuer = _validIssuer
};
try
{
ClaimsPrincipal principal = tokenHandler.ValidateToken(tokenString, validationParameters);
return(principal.Claims.First(_ => _.Type == ClaimTypes.NameIdentifier).Value);
}
catch (Exception)
{
return(null);
}
}
private string CreatePlayerTokenImpl(string name, GameServerID gameserverId)
{
var tokenDescriptor = new SecurityTokenDescriptor
{
Subject = new ClaimsIdentity(new Claim[]
{
new Claim(ClaimTypes.NameIdentifier, name),
new Claim(ClaimTypes.Role, "Player"),
}),
TokenIssuerName = _validIssuer,
AppliesToAddress = ComposeAudienceUrl(gameserverId),
Lifetime = new Lifetime(
created: DateTime.UtcNow.Subtract(TimeSpan.FromMinutes(1)),
expires: DateTime.UtcNow.AddMinutes(60)),
SigningCredentials = new SigningCredentials(
new InMemorySymmetricSecurityKey(this._synchroniedKey),
"http://www.w3.org/2001/04/xmldsig-more#hmac-sha256",
"http://www.w3.org/2001/04/xmlenc#sha256")
};
var tokenHandler = new JwtSecurityTokenHandler();
var token = tokenHandler.CreateToken(tokenDescriptor);
return(tokenHandler.WriteToken(token));
}
public GameServerImpl(GameServerID gameserverID, byte[] secretKey)
{
this.GameServerID = gameserverID;
this.PlayerAuthenticator = new PlayerAuthenticator(secretKey);
}
public LoginToLobbyResponseMessage(IPEndPoint gameServer, int innergameServerPort, GameServerUserToken token, GameServerID gameServerID)
{
this.GameServer = gameServer;
this.InnergameServerPort = innergameServerPort;
this.Token = token;
this.GameServerID = gameServerID;
}
private string ComposeAudienceUrl(GameServerID gameserverId)
{
return(string.Format("game://{0}", gameserverId.ID.ToString()));
}
