/**
* Connects to the hub. Errors if there is already a hub connection.
* Will cancel a pending reconnection if there is one. This method is
* not guaranteed to connect on first try.
*/
public async void Connect()
{
if (hubConnectionHandler != null)
{
throw new Exception("Already connected.");
}
if (!league.IsConnected)
{
return;
}
try
{
DebugLogger.Global.WriteMessage("Connecting to Rift...");
// Cancel pending reconnect if there is one.
if (reconnectCancellationTokenSource != null)
{
DebugLogger.Global.WriteMessage($"Canceling older reconnect to Rift.");
reconnectCancellationTokenSource.Cancel();
reconnectCancellationTokenSource = null;
}
// Ensure that our token is still valid...
bool valid = false; // in case first startup and hub token is empty
if (!Persistence.GetHubToken().IsNullOrEmpty())
{
DebugLogger.Global.WriteMessage("Requesting hub token..");
var response = await httpClient.GetStringAsync(App.HUB + "/check?token=" + Persistence.GetHubToken());
valid = response == "true";
DebugLogger.Global.WriteMessage($"Hub token validity: {(valid ? "valid" : "invalid")}.");
}
// ... and request a new one if it isn't.
if (!valid)
{
DebugLogger.Global.WriteMessage($"Requesting hub token..");
var payload = string.Format("{{\"pubkey\":\"{0}\"}}", CryptoHelpers.ExportPublicKey());
var responseBlob = await httpClient.PostAsync(App.HUB + "/register", new StringContent(payload, Encoding.UTF8, "application/json"));
var response = SimpleJson.DeserializeObject <dynamic>(await responseBlob.Content.ReadAsStringAsync());
if (!response["ok"])
{
throw new Exception("Could not receive JWT from Rift");
}
Persistence.SetHubToken(response["token"]);
DebugLogger.Global.WriteMessage($"Hub token: {response["token"]}.");
}
// Connect to hub. Will error if token is invalid or server is down, which will prompt a reconnection.
hubConnectionHandler = new HubConnectionHandler(league);
hubConnectionHandler.OnClose += CloseAndReconnect;
// We assume to be connected.
if (isNewLaunch)
{
DebugLogger.Global.WriteMessage($"Creating New Launch popup.");
//app.ShowNotification("Connected to League. Click here for instructions on how to control your League client from your phone.");
isNewLaunch = false;
}
hasTriedImmediateReconnect = false;
}
catch (Exception e)
{
DebugLogger.Global.WriteError($"Connection to Rift failed, an exception occurred: {e.ToString()}");
// Something happened that we didn't anticipate for.
// Just try again in a bit.
CloseAndReconnect();
}
}
/**
* Handles a message incoming through rift. First checks its opcode, then possibly decrypts the contents.
*/
public void HandleMessage(dynamic msg)
{
if (key != null)
{
try
{
var contents = CryptoHelpers.DecryptAES(key, (string)msg);
this.HandleMimicMessage(SimpleJson.DeserializeObject(contents));
}
catch
{
// Ignore message.
return;
}
}
if (!(msg is JsonArray))
{
return;
}
if (msg[0] == (long)MobileOpcode.Secret)
{
var info = CryptoHelpers.DecryptRSA((string)msg[1]);
if (info == null)
{
this.SendRaw("[" + MobileOpcode.SecretResponse + ",false]");
return;
}
dynamic contents = SimpleJson.DeserializeObject(info);
if (contents["secret"] == null || contents["identity"] == null || contents["device"] == null || contents["browser"] == null)
{
return;
}
// If this device is already approved, immediately respond.
if (Persistence.IsDeviceApproved(contents["identity"]))
{
this.key = Convert.FromBase64String((string)contents["secret"]);
this.SendRaw("[" + (long)MobileOpcode.SecretResponse + ",true]");
}
else
{
// Note: UI prompt needs to happen on an STA thread.
var promptThread = new Thread(() =>
{
// Else, prompt the user.
var window = new DeviceConnectionPrompt((string)contents["device"], (string)contents["browser"], result =>
{
// If approved, save the device identity and set the key.
if (result)
{
this.key = Convert.FromBase64String((string)contents["secret"]);
Persistence.ApproveDevice(contents["identity"]);
}
// Send the result of the prompt to the device.
this.SendRaw("[" + (long)MobileOpcode.SecretResponse + "," + result.ToString().ToLower() + "]");
});
window.Show();
window.Focus();
Dispatcher.Run();
});
promptThread.SetApartmentState(ApartmentState.STA);
promptThread.Start();
}
}
}
