private void CalculateSecretChatParamsAsync()
{
_mtProtoService.GetDHConfigAsync(new TLInt(0), new TLInt(0),
result =>
{
var dhConfig = (TLDHConfig)result;
if (!TLUtils.CheckPrime(dhConfig.P.Data, dhConfig.G.Value))
{
return;
}
var aBytes = new byte[256];
var random = new SecureRandom();
random.NextBytes(aBytes);
_a = TLString.FromBigEndianData(aBytes);
_p = dhConfig.P;
_g = dhConfig.G;
#if DEBUG
//Thread.Sleep(15000);
#endif
var gaBytes = MTProtoService.GetGB(aBytes, dhConfig.G, dhConfig.P);
_ga = TLString.FromBigEndianData(gaBytes);
if (_invokeDelayedUserAction)
{
_invokeDelayedUserAction = false;
CreateSecretChat();
}
},
error =>
{
Execute.ShowDebugMessage("messages.getDhConfig error: " + error);
});
}
private async void OnAnswerRequested(VoipPhoneCall sender, CallAnswerEventArgs args)
{
if (_phoneCall != null)
{
await UpdateStateAsync(TLPhoneCallState.ExchangingKeys);
var reqConfig = new TLMessagesGetDHConfig {
Version = 0, RandomLength = 256
};
var config = await SendRequestAsync <TLMessagesDHConfig>("messages.getDhConfig", reqConfig);
if (config.IsSucceeded)
{
var dh = config.Result;
if (!TLUtils.CheckPrime(dh.P, dh.G))
{
return;
}
var salt = new byte[256];
var secureRandom = new SecureRandom();
secureRandom.NextBytes(salt);
secretP = dh.P;
a_or_b = salt;
var g_b = MTProtoService.GetGB(salt, dh.G, dh.P);
var request = new TLPhoneAcceptCall
{
GB = g_b,
Peer = _phoneCall.ToInputPhoneCall(),
Protocol = new TLPhoneCallProtocol
{
IsUdpP2p = true,
IsUdpReflector = true,
MinLayer = Telegram.Api.Constants.CallsMinLayer,
MaxLayer = Telegram.Api.Constants.CallsMaxLayer,
}
};
var response = await SendRequestAsync <TLPhonePhoneCall>("phone.acceptCall", request);
if (response.IsSucceeded)
{
_systemCall.NotifyCallActive();
Handle(new TLUpdatePhoneCall {
PhoneCall = response.Result.PhoneCall
});
}
}
}
}
internal async void OutgoingCall(int userId, long accessHash)
{
await UpdateStateAsync(TLPhoneCallState.Requesting);
var coordinator = VoipCallCoordinator.GetDefault();
var call = coordinator.RequestNewOutgoingCall("Unigram", _user.FullName, "Unigram", VoipPhoneCallMedia.Audio);
_outgoing = true;
_systemCall = call;
_systemCall.AnswerRequested += OnAnswerRequested;
_systemCall.RejectRequested += OnRejectRequested;
var reqConfig = new TLMessagesGetDHConfig {
Version = 0, RandomLength = 256
};
var config = await SendRequestAsync <TLMessagesDHConfig>("messages.getDhConfig", reqConfig);
if (config.IsSucceeded)
{
var dh = config.Result;
if (!TLUtils.CheckPrime(dh.P, dh.G))
{
return;
}
var salt = new byte[256];
var secureRandom = new SecureRandom();
secureRandom.NextBytes(salt);
secretP = dh.P;
a_or_b = salt;
g_a = MTProtoService.GetGB(salt, dh.G, dh.P);
var request = new TLPhoneRequestCall
{
UserId = new TLInputUser {
UserId = userId, AccessHash = accessHash
},
RandomId = TLInt.Random(),
GAHash = Utils.ComputeSHA256(g_a),
Protocol = new TLPhoneCallProtocol
{
IsUdpP2p = true,
IsUdpReflector = true,
MinLayer = Telegram.Api.Constants.CallsMinLayer,
MaxLayer = Telegram.Api.Constants.CallsMaxLayer,
}
};
var response = await SendRequestAsync <TLPhonePhoneCall>("phone.requestCall", request);
if (response.IsSucceeded)
{
var update = new TLUpdatePhoneCall {
PhoneCall = response.Result.PhoneCall
};
Handle(update);
await UpdateStateAsync(TLPhoneCallState.Waiting);
}
else
{
Debugger.Break();
}
}
}
public async void Handle(TLUpdatePhoneCall update)
{
await VoIPConnection.Current.SendUpdateAsync(update);
await Task.Delay(2000);
//if (update.PhoneCall is TLPhoneCallDiscarded discarded)
//{
// if (discarded.IsNeedRating)
// {
// Debugger.Break();
// }
// if (discarded.IsNeedDebug)
// {
// Debugger.Break();
// }
//}
return;
if (update.PhoneCall is TLPhoneCallRequested callRequested)
{
var reqReceived = new TLPhoneReceivedCall();
reqReceived.Peer = new TLInputPhoneCall();
reqReceived.Peer.Id = callRequested.Id;
reqReceived.Peer.AccessHash = callRequested.AccessHash;
ProtoService.SendRequestAsync <bool>("phone.receivedCall", reqReceived, null, null);
var user = CacheService.GetUser(callRequested.AdminId) as TLUser;
Execute.BeginOnUIThread(async() =>
{
var dialog = await TLMessageDialog.ShowAsync(user.DisplayName, "CAAAALLL", "OK", "Cancel");
if (dialog == Windows.UI.Xaml.Controls.ContentDialogResult.Primary)
{
var config = await ProtoService.GetDHConfigAsync(0, 256);
if (config.IsSucceeded)
{
var dh = config.Result;
if (!TLUtils.CheckPrime(dh.P, dh.G))
{
return;
}
secretP = dh.P;
var salt = new byte[256];
var secureRandom = new SecureRandom();
secureRandom.NextBytes(salt);
a_or_b = salt;
var g_b = MTProtoService.GetGB(salt, dh.G, dh.P);
var request = new TLPhoneAcceptCall
{
GB = g_b,
Peer = new TLInputPhoneCall
{
Id = callRequested.Id,
AccessHash = callRequested.AccessHash
},
Protocol = new TLPhoneCallProtocol
{
IsUdpP2p = true,
IsUdpReflector = true,
MinLayer = 65,
MaxLayer = 65,
}
};
var response = await ProtoService.SendRequestAsync <TLPhonePhoneCall>("phone.acceptCall", request);
if (response.IsSucceeded)
{
}
}
}
else
{
var req = new TLPhoneDiscardCall();
req.Peer = new TLInputPhoneCall();
req.Peer.Id = callRequested.Id;
req.Peer.AccessHash = callRequested.AccessHash;
req.Reason = new TLPhoneCallDiscardReasonHangup();
ProtoService.SendRequestAsync <TLPhonePhoneCall>("phone.acceptCall", req, null, null);
}
});
}
else if (update.PhoneCall is TLPhoneCall call)
{
var auth_key = computeAuthKey(call);
var g_a = call.GAOrB;
var buffer = TLUtils.Combine(auth_key, g_a);
var sha256 = Utils.ComputeSHA256(buffer);
var emoji = EncryptionKeyEmojifier.EmojifyForCall(sha256);
var user = CacheService.GetUser(call.AdminId) as TLUser;
Execute.BeginOnUIThread(async() =>
{
var dialog = await TLMessageDialog.ShowAsync(user.DisplayName, string.Join(" ", emoji), "OK");
});
}
}
public void StartOutgoingCall(TLInputUserBase userId)
{
var salt = new Byte[256];
var random = new SecureRandom();
random.NextBytes(salt);
var version = _lastVersion ?? new TLInt(0);
var randomLength = new TLInt(256);
_mtProtoService.GetDHConfigAsync(version, randomLength,
result =>
{
ConfigureDeviceForCall();
ShowNotifications();
StartConnectionSound();
DispatchStateChanged(PhoneCallState.STATE_REQUESTING);
_eventAggregator.Publish(new PhoneCallEventArgs("NotificationCenter.didStartedCall"));
var dhConfig = result as TLDHConfig;
if (dhConfig != null)
{
if (!TLUtils.CheckPrime(dhConfig.P.Data, dhConfig.G.Value))
{
CallFailed();
return;
}
_secretP = dhConfig.P;
_secretG = dhConfig.G;
_secretRandom = dhConfig.Random;
}
for (var i = 0; i < 256; i++)
{
salt[i] = (byte)(salt[i] ^ _secretRandom.Data[i]);
}
var gaBytes = MTProtoService.GetGB(salt, _secretG, _secretP);
var protocol = new TLPhoneCallProtocol
{
Flags = new TLInt(0),
UdpP2P = true,
UdpReflector = true,
MinLayer = new TLInt(CALL_MIN_LAYER),
MaxLayer = new TLInt(CALL_MAX_LAYER)
};
_ga = gaBytes;
var gaHash = Utils.ComputeSHA256(_ga);
_mtProtoService.RequestCallAsync(userId, TLInt.Random(), TLString.FromBigEndianData(gaHash), protocol,
result2 =>
{
_call = result2;
_aOrB = salt;
DispatchStateChanged(PhoneCallState.STATE_WAITING);
//if (_endCallAfterRequest)
//{
// Hangup();
// return;
//}
},
error2 =>
{
});
},
error =>
{
Helpers.Execute.ShowDebugMessage("messages.getDHConfig error " + error);
CallFailed();
});
}
