public static Func<IHttpHeaders, IHttpContext, Task<JObject>> Get(Configuration config, Game.GameServer gameServer)
{
return async (headers, context) =>
{
var result = new JObject();
var name = headers.GetByName("name");
var guid = headers.GetByName("guid");
string protocol = null;
headers.TryGetByName("protocol", out protocol);
if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(guid))
{
result["error"] = "fields missing";
return result;
}
if (string.IsNullOrEmpty(protocol))
{
protocol = "1";
}
// check the protocol version
uint protocolNum;
if (!uint.TryParse(protocol, out protocolNum))
{
result["error"] = "invalid protocol version";
return result;
}
if (config.Imports != null && config.Imports.Count > 0)
{
if (protocolNum < 2)
{
result["error"] = "Your client is too old to support imported resources. Please update to a cleanliness client or higher.";
return result;
}
}
IEnumerable<string> clientIdentifiers;
// authentication
if (!gameServer.Configuration.DisableAuth)
{
string authTicket;
if (!headers.TryGetByName("authTicket", out authTicket))
{
result["authID"] = gameServer.PlatformClient.LoginId;
return result;
}
var validationAddress = ((IPEndPoint)context.RemoteEndPoint).Address;
if (validationAddress.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6)
{
validationAddress = IPAddress.Parse("192.168.1.1"); // as these are whitelisted in NP code
}
var authResult = await gameServer.PlatformClient.ValidateTicket(validationAddress, ulong.Parse(guid), new NPSharp.RPC.Messages.Data.Ticket(Convert.FromBase64String(authTicket)));
if (!authResult.IsValid)
{
result["error"] = "Invalid NPID sent.";
return result;
}
clientIdentifiers = authResult.Identifiers;
}
else
{
// as there's no other authentication source, we'd guess
clientIdentifiers = new[] { string.Format("ip:{0}", ((IPEndPoint)context.RemoteEndPoint).Address) };
}
var client = new Client();
client.Token = TokenGenerator.GenerateToken();
client.Name = name;
client.Guid = ulong.Parse(guid).ToString("x16");
client.Identifiers = clientIdentifiers;
client.ProtocolVersion = protocolNum;
client.Touch();
if (ClientInstances.Clients.ContainsKey(guid))
{
gameServer.DropClient(ClientInstances.Clients[guid], "Duplicate GUID");
}
ClientInstances.AddClient(client);
result["token"] = client.Token;
result["protocol"] = Game.GameServer.PROTOCOL_VERSION;
return result;
};
}